Artemis II marked a key step in its return to Earth late Tuesday, as the Orion spacecraft fired its engines to fine-tune its path home.
At 8:03 p.m. Eastern Time, Orion, named Integrity, performed its first return trajectory correction burn. The 15-second firing adjusted the spacecraft’s velocity by 1.6 feet per second, a small but critical change that aligned the crew’s course back toward Earth. NASA astronaut Christina Koch and Canadian Space Agency astronaut Jeremy Hansen oversaw the maneuver, reviewing procedures and closely tracking navigation and system data.
During a mission status briefing the same day, officials from the National Aeronautics and Space Administration released the first images captured during the crew’s lunar flyby, offering early visual data from the historic pass around the Moon. The agency also confirmed that the USS John P. Murtha (LPD-26) has departed port and is en route to a staging position in the Pacific Ocean, where it will support recovery operations following splashdown.
NASA said it will continue to share updates on recovery logistics and weather conditions in its daily briefings.
A live view shows the Orion spacecraft and its solar arrays as the Artemis II crew completed the mission’s first return correction burn on Flight Day 7.
With the burn complete, the crew is expected to rest before beginning a new round of flight objectives on Wednesday, April 8, focused on preparing for reentry.
Among the scheduled tasks is a test of an orthostatic intolerance garment, equipment designed to help astronauts regulate blood pressure and circulation as they transition from microgravity to Earth’s gravity. Reid Wiseman, Victor Glover, Koch and Hansen will evaluate how effectively the garment supports cardiovascular stability during the return phase.
Later in the day, the crew will take manual control of Orion as part of a piloting demonstration. Using the spacecraft’s viewing systems, they will align with a designated target and guide Orion into a tail-to-Sun orientation while comparing its control modes.
The manual piloting test is scheduled to begin at 9:59 p.m., adding another layer of real-time data to NASA’s assessment of the spacecraft’s performance during its journey home.
Astronauts aboard the International Space Station spoke with the Artemis II crew on April 8 following their lunar flyby, marking a rare ship-to-ship exchange between deep space and low Earth orbit. The Artemis II crew is returning to Earth after circling the Moon, while Expedition 74 astronauts continued biomedical research and mission training aboard the station. The interaction highlighted how ongoing ISS science supports future lunar missions under NASA’s Artemis program.
For a few minutes on Tuesday, two crews separated by hundreds of thousands of miles shared the same conversation.
Astronauts aboard the International Space Station (ISS) connected with their counterparts on NASA’s Artemis II mission, offering a rare moment of overlap between low Earth orbit operations and deep space travel. The call came just a day after Artemis II astronauts completed a historic lunar flyby and began their journey home.
On one side were Expedition 74 crew members Chris Williams, Jack Hathaway and Jessica Meir of NASA, along with Sophie Adenot of the European Space Agency (ESA). On the other were Artemis II astronauts Reid Wiseman, Victor Glover and Christina Koch, joined by Jeremy Hansen of the Canadian Space Agency (CSA).
The Artemis II crew is traveling aboard Orion, returning to Earth after looping around the Moon in NASA’s first crewed lunar mission in decades.
ISS and Artemis II crew exchange experiences after lunar flyby
The conversation turned quickly to comparison.
Station astronauts asked about differences between spacecraft, while Artemis II crew members described the experience of seeing the Moon up close. Christina Koch, drawing on her own time aboard the ISS, linked the two missions directly.
“Every single thing that we learned on ISS is up here,” Koch said, referring to how station-based training translates to deep space operations.
The exchange underscored a key role of the ISS within the Artemis program. The orbiting laboratory functions as a proving ground where astronauts refine procedures, test systems and adapt to long-duration spaceflight before venturing farther from Earth.
For NASA and its partners, that continuity is central. The Artemis II mission builds on lessons accumulated over years of station operations.
The Artemis II crew – (clockwise from left) Mission Specialist Christina Koch, Mission Specialist Jeremy Hansen, Commander Reid Wiseman, and Pilot Victor Glover – pause for a group photo with their zero gravity indicator “Rise,” inside the Orion spacecraft on their way home. Following a swing around the far side of the Moon on April 6, 2026, the crew exited the lunar sphere of influence (the point at which the Moon’s gravity has a stronger pull on Orion than the Earth’s) on April 7, and are headed back to Earth for a splashdown in the Pacific Ocean on April 10.
Space station biomedical research supports Artemis and future missions
While the call captured public attention, the station’s daily schedule remained anchored in research.
Crew members conducted a series of biomedical scans using the Ultrasound 3 device, focusing on how spaceflight affects the human body. Doctors on the ground monitored the scans in real time, looking for signs of blood clots that can form in leg veins and travel to the lungs.
Such risks have become a growing area of study as missions extend beyond short orbital stays. Data collected aboard the ISS feeds directly into planning for longer journeys, including missions to the Moon and eventually Mars.
Jessica Meir also contributed to the RelaxPro investigation, an ESA-sponsored study examining stress and immune responses in space. She collected saliva and hair samples that researchers will analyze on Earth for hormonal and immune markers.
The study explores whether mindfulness and meditation techniques can improve sleep quality and reduce stress during long-duration missions.
Cargo mission training and robotic systems testing on ISS
Operational training continued alongside scientific work.
Williams and Hathaway simulated the capture of the Cygnus XL cargo spacecraft using the Canadarm2 robotic system. Mission planners are targeting April 10 for the launch of the resupply mission aboard a **SpaceX Falcon 9 rocket, which will deliver supplies and experiments to the station.
Elsewhere, Sophie Adenot worked inside the Japanese Kibo laboratory module, setting up a compact experimental robotic arm known as TUSK. The system is being tested for precise movements at sub-millimeter levels in microgravity, a capability that could support delicate operations in future missions.
Adenot later joined fellow astronauts for emergency response simulations, rehearsing procedures designed to prepare crews for unexpected situations in orbit.
Roscosmos crew studies teamwork and fitness in orbit
Russian crew members also focused on research tied to long-duration missions.
Station commander Sergey Kud-Sverchkov and flight engineer Sergei Mikaev, both representing Roscosmos, participated in experiments examining team dynamics and physical conditioning in space. One study involved progressively complex computer tasks requiring cooperation, allowing researchers to observe how crews adapt to working together in confined environments.
The findings may influence crew training for future missions beyond Earth orbit.
Kud-Sverchkov later completed a monitored exercise session using an onboard cycle, while Mikaev assisted with health data collection.
Meanwhile, Andrey Fedyaev continued training with the European robotic arm inside the Nauka module, practicing both primary and backup control modes to ensure operational readiness.
The day’s activities reflected a layered mission environment.
On one level, astronauts pushed the boundaries of human spaceflight, exchanging insights between deep space and orbit. On another, they maintained a steady cadence of experiments and training that will shape future exploration.
The Artemis II crew moves farther from the Moon with each passing hour. The ISS crew remains in orbit, continuing work that helps make those journeys possible.
NASA’s Artemis II crew began their return journey to Earth on April 7 after completing a historic lunar flyby a day earlier. The crew, traveling aboard the Orion spacecraft about 236,000 miles from Earth, exited the Moon’s gravitational influence and initiated return procedures. The mission includes a call with International Space Station astronauts, scientific debriefs, and a planned trajectory correction burn to refine their path home.
The Artemis II crew woke to music and a long journey ahead.
Less than 24 hours after looping around the Moon, four astronauts aboard NASA’s Orion spacecraft began the slow pivot back toward Earth. They started Flight Day 7 roughly 236,000 miles from home, still carrying the momentum of a mission that marked humanity’s first crewed lunar flyby since Apollo-era flights more than five decades ago.
The crew of National Aeronautics and Space Administration (NASA) astronauts Reid Wiseman, Victor Glover and Christina Koch, along with Canadian Space Agency (CSA) astronaut Jeremy Hansen, crossed a key threshold early in the day. At 1:23 p.m. Eastern Time, Orion exited the Moon’s sphere of influence, the region where lunar gravity dominates spacecraft motion.
That transition marked a turning point. From that moment, Earth’s gravity again became the primary force shaping Orion’s path.
A quiet shift. But a decisive one.
Lunar Selfie Midway through their lunar observation period, the Artemis II crew members – Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen – pause to turn the camera around for a selfie inside the Orion spacecraft. Image Credit: NASA
Artemis II crew ISS call with Expedition 74 astronauts
Even as the spacecraft moved farther from the Moon, the crew maintained contact with colleagues in orbit closer to Earth.
At 2:40 p.m., Artemis II astronauts connected with crew members aboard the International Space Station (ISS) for a scheduled 15-minute audio call. On the station were NASA astronauts Jessica Meir, Jack Hathaway and Chris Williams, along with European astronaut Sophie Adenot of the European Space Agency (ESA).
The exchange, broadcast via NASA’s official channels, offered a rare ship-to-ship moment between astronauts operating at vastly different distances from Earth.
Such interactions serve both technical and symbolic purposes. They allow crews to compare conditions, share observations, and reinforce coordination across missions that together define current human spaceflight.
Lunar flyby data and science debrief after close Moon pass
Attention quickly shifted from conversation to analysis.
At 3 p.m., the Artemis II crew joined science teams on the ground for a detailed debrief. The timing was deliberate. Mission planners wanted to capture observations while impressions from the lunar flyby remained fresh.
The April 6 flyby carried Orion around the far side of the Moon, a region not visible from Earth. During that pass, astronauts documented surface features, lighting conditions and spacecraft performance, data expected to support planning for future Artemis missions.
NASA has positioned Artemis II as a test flight. Its purpose extends beyond demonstration to refinement. Every observation feeds into subsequent missions, including planned crewed landings under the Artemis program.
Engineers and scientists are expected to analyze crew feedback alongside telemetry data in the coming weeks.
(April 6, 2026) – Captured by the Artemis II crew during their lunar flyby on April 6, 2026, this image shows the Moon fully eclipsing the Sun. From the crew’s perspective, the Moon appears large enough to completely block the Sun, creating nearly 54 minutes of totality and extending the view far beyond what is possible from Earth. The corona forms a glowing halo around the dark lunar disk, revealing details of the Sun’s outer atmosphere typically hidden by its brightness. Also visible are stars, typically too faint to see when imaging the Moon, but with the Moon in darkness stars are readily imaged. This unique vantage point provides both a striking visual and a valuable opportunity for astronauts to document and describe the corona during humanity’s return to deep space. The faint glow of the nearside of the Moon is visible in this image, having been illuminated by light reflected off the Earth. NASA
Orion return trajectory correction burn details and timing
The most critical maneuver of the day was scheduled for later.
At 9:03 p.m., Orion’s thrusters were set to ignite for the first of three planned return trajectory correction burns. These burns are designed to fine-tune the spacecraft’s path toward Earth, ensuring precise reentry conditions.
Christina Koch and Jeremy Hansen were assigned to monitor spacecraft systems and oversee procedures during the maneuver. Such burns require exact timing and calibration, as even small deviations at this distance can translate into large trajectory changes closer to Earth.
NASA officials have described the return phase as a series of incremental adjustments rather than a single decisive action. Each burn builds on the last, gradually aligning Orion with its targeted splashdown corridor.
Between scheduled tasks, the crew was given staggered off-duty periods.
The downtime serves operational needs as much as personal ones. Rest cycles help maintain cognitive performance, particularly as the mission enters phases requiring sustained attention and procedural accuracy.
NASA scheduled a mission status briefing later in the day to provide updates on spacecraft systems, crew health and trajectory progress.
The Artemis II mission, part of NASA’s broader Artemis program, aims to reestablish human presence beyond low Earth orbit. Unlike earlier missions confined to orbital paths around Earth, Artemis II pushes into deep space, testing systems required for sustained lunar exploration.
Flight Day 7 marked a transition from exploration to return.
The Moon receded behind them. Earth, still distant, became the destination again.
An international team of scientists reported on April 7, 2026, that water on the Moon likely accumulated gradually over billions of years rather than from a single event. The study, published in Nature Astronomy, points to permanently shadowed craters near the lunar south pole as the most likely reservoirs of ice. Using data from NASA missions and simulations, researchers identified older craters as prime targets for future exploration and resource use.
For decades, scientists have known that water may exist on the Moon. What remained unclear was how it got there and why it appears unevenly spread across the surface.
A new study published April 7 in Nature Astronomy offers a clearer picture. The research suggests that lunar water did not arrive in a single dramatic event, such as a comet impact, but instead accumulated slowly over billions of years.
The study was led by Oded Aharonson of the Weizmann Institute of Science, with contributions from Paul Hayne at the University of Colorado Boulder and collaborators including Norbert Schörghofer. Their findings draw on years of observations and modeling to explain one of lunar science’s longest-standing questions.
Lunar south pole ice locations and cold traps explained
Evidence of water on the Moon has come primarily from missions led by NASA, including the Lunar Reconnaissance Orbiter. Instruments aboard the spacecraft detected signals consistent with ice inside deep craters near the Moon’s south pole. These craters, known as “cold traps,” remain in permanent shadow and can preserve ice for billions of years.
Observations from the orbiter’s Lyman Alpha Mapping Project instrument indicated that ice is not evenly distributed. Some craters appear rich in ice, while others show little to none. That patchy pattern has puzzled scientists for years.
The new study attempts to explain that uneven distribution by looking back at the Moon’s geological history. The researchers combined temperature data from the orbiter’s Diviner instrument with computer simulations that reconstructed how the Moon’s orientation has shifted over time.
The Moon’s tilt relative to Earth has not always been constant. As it shifted, craters that are permanently shadowed today may once have received sunlight, while others remained dark for much longer periods. This variation appears to have influenced where ice could accumulate and persist.
“It looks like the moon’s oldest craters also have the most ice,” Hayne said, noting that this pattern suggests a slow and continuous buildup of water over as much as 3 to 3.5 billion years.
How water may have formed and accumulated on the Moon
The study does not identify a single source of lunar water, but it narrows down the likely mechanisms. Researchers ruled out the idea that most of the Moon’s water arrived in one large delivery, such as a massive comet impact.
Instead, multiple processes likely contributed over time. Volcanic activity in the Moon’s distant past may have released water from its interior. Comets and asteroids could have delivered additional water through smaller impacts. Hydrogen from the solar wind may also have reacted with oxygen in lunar soil to form water molecules.
“Through the solar wind, a constant stream of hydrogen bombards the moon, and some of that hydrogen can be converted to water on the lunar surface,” Hayne said.
The researchers found that the craters that have remained in shadow the longest are also those most likely to contain ice today. One example is Haworth Crater near the Moon’s south pole, which may have been in continuous darkness for more than 3 billion years.
These findings could guide future lunar missions. Identifying where ice is most likely to be concentrated can help scientists and engineers plan landing sites and exploration strategies.
Water on the Moon is not just a scientific curiosity. It has practical implications for long-term human exploration. Ice deposits could be mined for drinking water, breathable oxygen and even rocket fuel by separating hydrogen and oxygen atoms.
“Finding water beyond Earth in liquid and usable form is one of the most important challenges in astronomy,” Aharonson said in a statement released by his institute.
Future missions aim to confirm lunar ice deposits
The study highlights the need for direct sampling to confirm the origin and distribution of lunar water. Observational data and simulations can narrow possibilities, but they cannot fully resolve the question.
Hayne and his colleagues are working on a new instrument, the Lunar Compact Infrared Imaging System, designed to study surface ice in greater detail. The instrument is expected to be deployed near the Moon’s south pole around 2027 as part of upcoming missions.
“Ultimately, the question of the source of the moon’s water will only be solved by sample analysis,” Hayne said. “We will need to go to the moon to analyze those samples there or find ways to bring them from the moon back to Earth.”
As space agencies and private companies accelerate plans for lunar exploration, the findings provide a clearer map of where to look. The Moon’s darkest craters, once seen as inaccessible voids, are emerging as some of the most valuable real estate beyond Earth.
The National Aeronautics and Space Administration launched four astronauts on April 2 from Kennedy Space Center in Florida aboard the Artemis II mission. The crew is set for a 10-day test flight around the Moon, marking the first human lunar flyby since the Apollo era. The mission aims to validate spacecraft systems and pave the way for future Moon landings and Mars exploration.
NASA’s Artemis II mission has marked humanity’s return to deep space, becoming the first crewed journey near the Moon since Apollo 17. Four astronauts aboard the Orion spacecraft completed a seven-hour lunar flyby, capturing detailed observations of the Moon’s far side. The crew also set a new record for the farthest distance traveled by humans, surpassing Apollo 13. During the mission, they witnessed a solar eclipse from space and observed rare meteoroid impacts on the lunar surface. The spacecraft is now on its return trajectory, while scientists analyze data collected during the flyby.
Aboard the Orion spacecraft were NASA astronauts Reid Wiseman, Victor Glover and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen who completed their lunar flyby, broke the Apollo 13 distance record (252,756 miles from Earth), and regained contact after passing the Moon’s far side.
🚀 LIVE FROM SPACE: President Donald J. Trump Calls Artemis II Astronauts After Breaking the Farthest Distance Record in Human Spaceflight 🇺🇸 HISTORIC!
“Your mission paves the way for America’s return to the lunar surface very soon.” pic.twitter.com/1TzmIEQG0l
US President Donald J.Trump calls the Artemis II Astronauts in space:
The White House shared video of President Trump phoning the Artemis II crew to congratulate them after breaking the human spaceflight distance record during their lunar flyby. Artemis II astronauts reached about 252,757 miles from Earth on April 6, 2026, surpassing Apollo 13’s 1970 mark of 248,655 miles by over 4,000 miles while passing the Moon’s far side.
Trump told the crew their mission paves the way for America’s return to the lunar surface, highlighting it as a historic step in U.S. space leadership.
Trump further said , “Thank you very much Jared and you are doing a fantastic job and hello very special hello to Artemis II. Today you’ve made history and made all America really proud, incredibly proud. We have a lot of things to be proud of lately, but there’s nothing like what you’re doing, circling around the moon for the first time in more than a half a century and breaking the all-time record for the farthest distance from planet Earth.
“Humans have really never seen anything quite like what you’re doing in a manned spacecraft. It’s really special. I wanted to congratulate each and every one of you. I want to personally salute and congratulate Commander Reid Wiseman, Pilot Victor Glover, Mission Specialist Christina Koch and Jeremy Hansen, and I also want to thank the entire amazing team at NASA, headed by Jared [Isaacman], who’s a very special guy, by the way. You have made this day possible, you’ve really inspired the entire world, really, everybody’s watching it”, Trump added.
And also there were few question from Trump to Artemis Crew about the mission where Trump asked “about most unforgettable part of this really historic day, and was there any difference in feel between the far side of the moon and the near side of the Moon, to which the Astronauts explained the differences due to Earth’s gravitational pull creating dramatic variations in the lunar landscapes. They described views of the Orientale crater, a solar eclipse from space, and Earthshine.
Live lunar flyby updates for NASA’s Artemis II mission will be published on this page. All times are Eastern.
9:35 p.m.
The Artemis II crew has completed the mission’s lunar observation period and is now beginning the return trip home. On Tuesday, April 7, Orion will exit the lunar sphere of influence at approximately 1:25 p.m., at a distance of 41,072 miles from the Moon.
8:35 p.m.
Artemis II is now entering a solar eclipse that will last for about an hour as Orion, the Moon and the Sun align. During this phase, the crew will see the Sun disappear behind a mostly darkened Moon.
The crew will use the opportunity to study the solar corona — the Sun’s outermost atmosphere — as it glows around the lunar edge. They also will watch for flashes of light from meteoroids striking the surface, which could offer insight into potential hazards on the Moon.
7:24 p.m.
The Artemis II crew witnessed an Earthrise as Orion emerged from behind the Moon, moments before the Deep Space Network reacquired the spacecraft’s signal and restored communications.
7:02 p.m.
The Artemis II crew has reached the mission’s maximum distance from Earth at 252,756 miles, setting a new record for human spaceflight. This milestone places the crew 4,111 miles farther from Earth than the Apollo 13 mission in 1970.
7:00 p.m.
Orion has reached its closest approach to the Moon at about 4,067 miles above the lunar surface. At this point, the spacecraft is traveling about 60,863 miles an hour relative to Earth, but only 3,139 miles an hour relative to the Moon.
6:44 p.m.
“As we prepare to go out of radio communication, we’re still going to feel your love from Earth. And to all of you down there on Earth and around Earth, we love you, from the Moon. We will see you on the other side.” Victor Glover, Artemis II Pilot
Victor Glover, Artemis II Pilot
The Orion spacecraft has entered a planned communications blackout as it passes behind the Moon. For about 40 minutes, the lunar surface blocks the radio signals from NASA’s Deep Space Network on Earth needed to stay in contact with the crew.
Similar blackouts occurred during the Artemis I and Apollo missions and are expected when using an Earth-based communications system. Once Orion emerges from behind the Moon, the network will quickly reacquire the signal and restore communications with mission control.
6:41 p.m.
As Orion traveled behind the Moon, the crew witnessed an “Earthset” — the moment Earth dropped below the lunar horizon — marking another milestone in the mission’s lunar flyby.
The Earth will re-emerge at “Earthrise” from the opposite edge of the Moon in about 40 minutes.
4:40 p.m.
A lively stream of science observations from the crew throughout the flyby has been received with grins, nods, and lots of chatter in the Science Evaluation Room, where lunar scientists are supporting the observations in mission control. The crew reported color nuances, which will help enhance scientific understandings of the Moon. Shades of browns and blues that can be picked out with human eyes can help reveal the mineral composition of a feature and its age. As crew reports are received, the science team is updating the observation plan based on their follow up questions and sending up new guidance to the crew.
2:45 p.m.
Due to last approximately seven hours, the lunar observation period is the duration of time that the crew is close enough to the Moon to make impactful science observations (4,070 miles altitude at closest approach) and the spacecraft is oriented such that the windows are pointed at the Moon.
At the beginning of the window, as Orion approaches the Moon on the near side, the side we can see from Earth, people in parts of the eastern hemisphere can view some of the same features the astronauts will observe. These include future CLPS landing site Reiner Gamma, a bright, mysterious swirl the origin of which scientists are still trying to understand, and Glushko, a bright, 27-mile-wide crater known for the white streaks that shoot out from it for up to 500 miles.
1:56 p.m.
The Artemis II crew of NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with CSA (Canadian Space Agency) astronaut Jeremy Hansen have set the record for the farthest distance from Earth traveled by a human mission, surpassing the Apollo 13 record of 248,655 miles set in 1970.
“As we surpass the furthest distance humans have ever traveled from planet Earth, we do so in honoring the extraordinary efforts and feats of our predecessors in human space exploration. We will continue our journey even further into space before Mother Earth succeeds in pulling us back to everything that we hold dear. But we most importantly choose this moment to challenge this generation and the next to make sure this record is not long-lived.” Jeremy Hansen, Canadian Space Agency (CSA) Astronaut and Artemis II Mission Specialist
Jeremy Hansen, Canadian Space Agency (CSA) Astronaut and Artemis II Mission Specialist.
NASA Flight Director Brandon Lloyd, Capsule Communicator Amy Dill, and Command and Handling Data Officer Brandon Borter also marked a lighthearted milestone today by emailing the crew what is now assumed to be the longest person-to-person message ever sent in human history.
(Shortly after 2 p.m. EDT, the crew described two small, unnamed craters on the heavily pockmarked lunar surface. Calling down to Earth, they suggested provisional names for them. Just northwest of Orientale basin, highlighted above, is a crater they would like to name Integrity after their spacecraft and this historic mission. Just northeast of the Integrity crater, on the near and far side boundary, and sometimes visible from Earth, the crew suggested an unnamed crater be designated Carroll in honor of Reid Weisman’s late wife, Carroll Taylor Wiseman, who passed away on May 17, 2020. After this mission is complete, the crater name proposals will be formally submitted to the International Astronomical Union, an organization that governs the naming of celestial bodies and their surface features.NASA)
After breaking the record for human spaceflight, crew also took a moment to provisionally name a couple of craters on the Moon, noting they were able to see them with their naked eye.
Just northwest of Orientale basin highlighted above is a crater they would like to name Integrity after their spacecraft and this historic mission. Just northeast of Integrity, on the near and far side boundary, and sometimes visible from Earth, the crew suggested Carroll crater in honor of Reid Wiseman’s late wife, Carroll Taylor Wiseman. After this mission is complete, the crater name proposals will be formally submitted to the International Astronomical Union, the organization that governs the naming of celestial bodies and their surface features.
NASA astronaut Reid Wiseman is pictured with his late wife Carroll Taylor Wiseman. Wiseman Family
1:30 p.m.
NASA’s lunar science officer briefed the crew on their science objectives for the upcoming lunar observation period.
On April 5, the science team sent the crew the final list of 30 lunar surface targets, including the Orientale basin, a nearly 600-mile-wide crater that straddles the Moon’s near and far sides. This 3.8-billion-year-old crater formed when a large object struck the lunar surface and retains clear evidence of that collision, including dramatic topography in its rings. The crew will study Orientale’s features up close and from multiple angles as they pass by.
Hertzsprung basin also is on the crew’s list of targets. Northwest of Orientale, it is a nearly 400-mile-wide crater on the Moon’s far side. An older ringed basin, Hertzsprung offers a unique contrast to Orientale because its features have been degraded by subsequent impacts. By comparing the topography of the two craters, the crew’s observations will help scientists gain insight into how lunar features evolve over geologic timescales.
Coverage will include live views of the Moon from cameras mounted on Orion’s solar arrays. Image and view quality may vary throughout the lunar observation period due to distance from Earth, system limitations, and bandwidth across NASA’s communications network.
Note: The spacecraft will enter a planned communications blackout from 6:44 to 7:25 p.m. EDT as Orion passes behind the Moon. Spacecraft camera views will not be available during this time, but NASA’s live coverage will continue.
The four astronauts aboard NASA’s Artemis II mission woke up to a milestone few humans have experienced. Less than 19,000 miles from the Moon, they began final preparations for a lunar flyby that will mark humanity’s return to deep space after more than five decades.
Reid Wiseman, Victor Glover, Christina Koch, and Canadian astronaut Jeremy Hansen are expected to guide the Orion spacecraft through a carefully timed trajectory past the Moon later in the day. The moment carries symbolic weight. The last time humans ventured this far was during Apollo 17 in December 1972.
The crew’s wake-up call came with music. “Good Morning,” by Mandisa and TobyMac played through the spacecraft, followed by a recorded message from Apollo-era astronaut Jim Lovell, who died in 2025. Lovell commanded Apollo 13, the mission that previously held the record for the farthest distance traveled by humans from Earth.
That record is expected to fall at approximately 1:56 p.m. Eastern Time. Orion will surpass Apollo 13’s maximum distance of 248,655 miles, eventually reaching about 252,760 miles from Earth later in the evening.
“Hello, Artemis II! This is Apollo astronaut Jim Lovell. Welcome to my old neighborhood! When Frank Borman, Bill Anders, and I orbited the Moon on Apollo 8, we got humanity’s first up-close look at the Moon and got a view of the home planet that inspired and united people around the world. I’m proud to pass that torch on to you — as you swing around the Moon and lay the groundwork for missions to Mars … for the benefit of all. It’s a historic day, and I know how busy you’ll be. But don’t forget to enjoy the view. So, Reid, Victor, Christina, and Jeremy, and all the great teams supporting you – good luck and Godspeed from all of us here on the good Earth.”
Lovell,Gemini VII, Gemini XII, Apollo 8, and Apollo 13 Astronaut
Lunar Flyby Timeline And Observation Plans
The flyby itself is scheduled to begin around 2:45 p.m. Eastern Time and will span roughly seven hours. During this window, Orion will pass close enough to the lunar surface to allow astronauts to observe geological features in detail.
NASA has indicated that cameras mounted on Orion’s solar arrays will transmit live views of the Moon back to Earth. The agency plans to stream coverage across multiple platforms, including NASA+, YouTube, and major streaming services.
Engineers have cautioned that image quality may fluctuate. The distance from Earth, along with bandwidth constraints across NASA’s Deep Space Network, could affect transmission clarity during portions of the flyby.
The spacecraft’s closest approach is expected shortly after a planned communications blackout. At about 6:44 p.m., Orion will pass behind the Moon, temporarily losing contact with Earth as lunar mass blocks radio signals. The blackout is expected to last around 40 minutes.
Within that window, at approximately 7:02 p.m., Orion will reach its nearest point to the lunar surface, about 4,070 miles above it. This maneuver is critical for setting up the spacecraft’s trajectory for its return journey.
Final Flyby Preparations art002e009294 (April 6, 2026) – Artemis II Pilot Victor Glover, Commander Reid Wiseman, and Mission Specialist Jeremy Hansen prepare for their journey around the far side of the Moon by configuring their camera equipment shortly before beginning their lunar flyby observations. Image Credit: NASA
Solar Eclipse Viewed From Deep Space
As the flyby concludes, the crew will witness a rare celestial alignment. Beginning around 8:35 p.m., the astronauts are expected to see a solar eclipse from their vantage point in space.
From Orion, the Moon will move directly between the spacecraft and the Sun, blocking sunlight for nearly an hour. The crew will observe the solar corona, the outermost layer of the Sun’s atmosphere, which becomes visible during such eclipses.
NASA officials have said this phase of the mission offers both scientific and experiential value. Observing the corona from deep space provides a unique opportunity to study solar activity without atmospheric interference.
The Artemis II mission is designed as a test flight, evaluating systems that will support future lunar landings under NASA’s Artemis program. Unlike later missions, Artemis II does not include a landing. Its focus remains on validating life support systems, navigation, and crew operations in deep space.
Still, Tuesday’s flyby represents a turning point. For the first time in more than 50 years, humans are returning to the Moon’s vicinity, setting the stage for a sustained presence in lunar orbit and, eventually, on its surface.
The spacecraft will continue its journey following the flyby, looping back toward Earth in the coming days.
Key moments for the lunar flyby include this following. All times are Eastern and may be adjusted based on real-time operations:
NASA
Monday, April 6
1:30 p.m.: The science officer in the Mission Control Center at NASA’s Johnson Space Center in Houston will brief the crew on their science goals for the upcoming flyby.
1:56 p.m.: The Artemis II crew is expected to surpass the record previously set by the Apollo 13 crew in 1970 for the farthest humans have ever traveled from Earth.
2:45 p.m.: Lunar observations begin.
6:44 p.m.: Mission control expects to temporarily lose communication with the crew as the Orion spacecraft passes behind the Moon.
6:45 p.m.: During “Earthset,” Earth will glide behind the Moon from Orion’s perspective.
7:02 p.m.: Orion reaches its closest approach to the Moon at 4,070 miles above the surface.
7:07 p.m.: Crew reach their maximum distance from Earth during the mission (252,706 miles).
7:25 p.m.: “Earthrise” marks Earth coming back into view on the opposite edge of the Moon.
7:25 p.m.: Mission control will re-acquire communication with the astronauts.
8:35-9:32 p.m.: During a solar eclipse, the Sun will pass behind the Moon from the crew’s perspective.
9:20 p.m.: Lunar observations conclude.
Tuesday, April 7
1:25 p.m.: Orion exits the lunar sphere of influence at 41,072 miles from the Moon.
Astronauts aboard Artemis II continue their workday aboard the Orion spacecraft, testing survival suits and preparing for a lunar flyby set for Monday, April 6. The crew is set to enter the Moon’s gravitational influence just after midnight and execute a key trajectory correction burn later in the day. Final science targets, including major lunar basins, have been assigned ahead of a six-hour observation window.
Inside Orion, the workday has shifted toward final preparations for one of the mission’s defining moments.
With the Moon now close enough to begin shaping the spacecraft’s path, the four astronauts are balancing system checks with scientific planning, moving through a schedule that blends engineering discipline with observation readiness.
Commander Reid Wiseman, pilot Victor Glover, and mission specialists Christina Koch and Jeremy Hansen are continuing a full evaluation of the Orion Crew Survival System suits, a system designed for worst-case scenarios in spaceflight.
Orion spacesuit testing and emergency readiness in deep space
The suit demonstration involves a complete operational sequence. Astronauts are performing leak checks, simulating seat entry, and testing how well they can move, eat, and drink while fully suited.
NASA designed the suits to function across multiple mission phases. They provide life support if cabin pressure is lost, protect crew members during launch and reentry, and support survival after splashdown in the ocean.
Engineers are using this test to understand how the suits perform over extended use in microgravity. Comfort and flexibility are critical, especially for missions that will last longer than earlier lunar programs.
The evaluation also feeds into planning for future deep space missions, where astronauts may need to rely on such systems for longer durations and under more demanding conditions.
(This photo shows the Orion spacecraft with the Moon in the distance, as captured by a camera on the tip of one of its solar array wings during flight day 2 of the mission. NASA)
Outbound trajectory correction burn and lunar approach timing
Following the suit tests, the crew is scheduled to carry out an outbound trajectory correction burn at approximately 11:03 p.m. Eastern Daylight Time.
The maneuver will refine Orion’s path toward the Moon, ensuring that the spacecraft is correctly aligned for its flyby observation window. Earlier in the mission, two planned burns were canceled after flight controllers confirmed the spacecraft was already on an accurate trajectory.
Ahead of the maneuver, Koch and Hansen are reviewing procedures, with Hansen assigned to monitor navigation data and spacecraft configuration during the burn.
The mission timeline also includes a key milestone. Orion is expected to enter the Moon’s gravitational sphere of influence at about 12:41 a.m. on April 6, marking the transition from transit to direct lunar interaction.
(A screenshot of the application the Artemis II crew sees on their PCDs that guides them in the execution of the lunar science observation plan. This custom software was built by the Crew Lunar Observations Team, a subset of the Artemis II lunar science team. In this screenshot you can see Orientale basin, target number 12 circled on the bottom right of the Moon, and to its left, target number 13, Hertzsprung basin. NASA)
Lunar flyby science targets include major impact basins
Mission control has delivered the final list of lunar observation targets, giving the crew a defined set of features to document during the flyby.
Among the most prominent is the Orientale basin, a massive impact structure nearly 600 miles wide that spans the boundary between the Moon’s near and far sides.
Formed roughly 3.8 billion years ago, the basin preserves clear evidence of a large collision, including concentric rings and dramatic surface topography. Its visibility during the flyby makes it a priority for imaging and analysis.
Another key target is the Hertzsprung basin, located northwest of Orientale on the Moon’s far side. At roughly 400 miles across, it represents an older and more degraded structure.
By comparing the two basins, astronauts will help scientists study how lunar features evolve over time. Differences in structure, erosion, and impact history offer clues about the Moon’s geological development.
The crew is expected to review these targets in detail and coordinate with mission controllers to finalize observation techniques before the flyby begins.
Final preparations inside Orion as flyby approaches
As the spacecraft moves deeper into the Moon’s gravitational influence, operations inside Orion are becoming more tightly focused.
Each task, from suit testing to trajectory adjustments, is tied directly to the upcoming flyby. The six-hour observation window will require precise timing, coordination, and execution.
The astronauts are working through final checklists, ensuring that both human and mechanical systems are ready. Cameras must be positioned, observation plans synchronized, and spacecraft orientation carefully controlled.
The mission has reached a stage where preparation outweighs transit. The spacecraft continues along a stable path, but the emphasis has shifted to how effectively the crew can carry out their objectives once they reach lunar proximity.
For the Artemis II team, the work now is less about getting to the Moon and more about what they will do when they get there.
Key moments for the lunar flyby include the following. All times are Eastern and may change based on real-time operations:
Monday, April 6
12:41 a.m.: Orion enters lunar sphere of influence at 41,072 miles from the Moon.
1:30 p.m.: The science officer in mission control will brief the crew on their science goals for the upcoming flyby.
1:56 p.m.: The Artemis II crew is expected surpass the record previously set by the Apollo 13 crew in 1970 for the farthest humans have ever traveled from Earth.
2:45 p.m.: Lunar observations begin.
6:44 p.m.: Mission control expects to temporarily lose communication with the crew as the Orion spacecraft passes behind the Moon.
6:45 p.m.: During “Earthset,” Earth will glide behind the Moon from Orion’s perspective.
7:02 p.m.: Orion reaches its closest approach to the Moon at 4,070 miles above the surface.
7:07 p.m.: Crew reach their maximum distance from Earth during the mission.
7:25 p.m.: “Earthrise” marks Earth coming back into view on the opposite edge of the Moon.
7:25 p.m.: NASA’s Mission Control Center should re -acquire communication with the astronauts.
8:35-9:32 p.m.: During a solar eclipse, the Sun will pass behind the Moon from the crew’s perspective.
9:20 p.m.: Lunar observations conclude.
Tuesday, April 7
1:25 p.m.: Orion exits the lunar sphere of influence at 41,072 miles from the Moon.
During the flyby, the spacecraft will break the record for the farthest distance from Earth traveled by any human mission, surpassing the mark set by Apollo 13 in April 1970 during its emergency return to Earth. The spacecraft is expected to break the record at 1:56 p.m. and will reach its maximum distance at 7:07 p.m., a total of 252,760 miles from Earth; Apollo 13 reached 248,655 miles from Earth.
When Orion passes behind the Moon, the mission will enter a planned communications blackout of about 40 minutes as the lunar surface blocks the radio signals needed for the Deep Space Network to connect with the spacecraft. Similar blackouts occurred during the Artemis I and Apollo missions and are expected with an Earth-based communications infrastructure. Once Orion reemerges, the network will quickly reacquire its signal and restore contact with mission control.
Astronauts aboard Artemis II began Flight Day 5 by testing their Orion survival suits as the Orion spacecraft closed to within 65,235 miles of the Moon. The activities include a full suit evaluation, a planned trajectory correction burn, and entry into the Moon’s gravitational sphere of influence. The mission is transitioning into its final approach phase ahead of a scheduled lunar flyby.
As CeeLo Green’s “Working Class Heroes (Work)” played through the cabin, the four astronauts shifted quickly into one of the mission’s most practical tests: evaluating the suits designed to keep them alive if something goes wrong.
At this stage of the mission, the spacecraft is about 65,235 miles from the Moon. The distance marks a transition point, where lunar gravity begins to shape the trajectory more strongly than Earth’s pull.
The crew also heard a special message from Apollo astronaut Charlie Duke.
“John Young and I landed on the Moon in 1972 in a lunar module we named Orion. I’m glad to see a different kind of Orion helping return humans to the Moon as America charts the course to the lunar surface. Below you on the Moon is a photo of my family. I pray it reminds you that we and America and all of the world are cheering you on.”
Charlie duke, Apollo 16 Astronaut
Orion Crew Survival System suit test in microgravity
Commander Reid Wiseman, pilot Victor Glover, and mission specialists Christina Koch and Jeremy Hansen are conducting a full operational sequence using the Orion Crew Survival System suit.
The test is structured to mirror real mission scenarios. Astronauts will don the suits, pressurize them, and perform leak checks. They will then simulate entering their seats and assess how easily they can move, eat, and drink while fully suited.
NASA engineers are particularly focused on how the suits perform over extended periods in microgravity. Unlike earlier programs, Artemis missions are designed for longer durations, making comfort and mobility as critical as protection.
The suit itself serves multiple purposes. It is built to provide life support if the cabin loses pressure, protect astronauts during high-risk phases such as launch and reentry, and support survival operations after splashdown in the ocean.
Enhanced thermal regulation, improved communication systems, and greater flexibility are among the features being evaluated during this demonstration. The data collected will shape how future crews operate during longer missions beyond the Moon.
Victor Glover, Jeremy Hansen, and Reid Wiseman work together inside the Orion spacecraft on their way to the Moon.
Final trajectory adjustments and lunar approach phase
Later in the day, the crew is scheduled to execute an outbound trajectory correction burn, one of the final planned propulsion maneuvers before the lunar flyby.
These burns fine-tune the spacecraft’s path, ensuring that Orion reaches the correct position and orientation for its observation window around the Moon. Earlier in the mission, several planned burns were canceled due to the spacecraft’s precise trajectory. This maneuver is expected to proceed as scheduled.
The crew will also receive their final set of lunar science targets, completing the preparation phase for the flyby. These targets include specific surface features identified by NASA scientists for observation and imaging.
By the end of the day, Orion is expected to enter the Moon’s gravitational sphere of influence, a region where lunar gravity becomes the dominant force acting on the spacecraft.
This shift has both symbolic and operational significance. It marks the point where the mission transitions from transit to direct lunar interaction.
(The Artemis II crew took this photo on day 4 of their journey to the Moon. In it, the Moon is oriented with the South Pole at the top and are beginning to see parts of the lunar far side. Orientale basin is on the right edge of the lunar disk in this image. Artemis II marks the first time that humans have seen the entire basin. The Artemis II crew will continue to observe Orientale from multiple angles as they approach the Moon and throughout the lunar flyby. Orientale is the textbook multi-ring impact basin used as a baseline to compare other impact craters on rocky worlds from Mercury to Pluto. NASA)
Mission operations continue under close ground coordination
Mission managers and scientists are scheduled to provide a detailed update during a briefing streamed on NASA’s official channels later in the day.
The briefings serve as a key link between the spacecraft and the public, offering updates on system performance, crew health, and mission progress.
Inside the capsule, the crew’s schedule remains tightly controlled. Each task, from suit testing to propulsion maneuvers, is timed to align with both spacecraft operations and communication windows with Earth.
The suit demonstration stands out as one of the more human-centered activities in the mission. It focuses not on where the spacecraft is going, but on how the crew will function if conditions change rapidly.
As Orion continues its approach, the astronauts are balancing technical precision with preparation for the unexpected. The systems being tested now, including the suits, are designed for scenarios that mission planners hope never occur but must be ready to handle.
The Moon is now close enough to influence the spacecraft’s path. Inside Orion, the crew is working through the final checklists that will carry them into the flyby phase, where observation, timing, and coordination will define the mission’s next milestone.
Astronauts aboard Artemis II completed a 41-minute manual piloting test of the Orion spacecraft on Flight Day 4, taking turns controlling the vehicle in deep space. The demonstration, carried out tested thruster modes and maneuvering capabilities as the crew also reviewed targets for an upcoming lunar flyby. The mission continues on a stable trajectory toward the Moon, with further piloting tests planned later in the flight.
The astronauts aboard Orion spent part of their fourth day in space doing something few humans have ever done: manually steering a spacecraft far beyond Earth orbit.
Late in the day, Christina Koch and Jeremy Hansen took control of the capsule, guiding it through a series of controlled maneuvers designed to test how the spacecraft responds to human input in deep space.
The exercise began at 9:09 p.m. Eastern Daylight Time and lasted 41 minutes, giving engineers a detailed look at Orion’s handling under different conditions.
Orion manual piloting test evaluates deep space handling
During the demonstration, the astronauts tested two distinct thruster configurations. One allowed full six degrees of freedom, enabling movement and rotation across all axes. The other restricted motion to three degrees of freedom, simplifying control inputs and simulating different operational scenarios.
The goal is data. NASA engineers are studying how Orion behaves when astronauts take direct control, measuring responsiveness, stability, and precision. These findings will inform how future crews operate spacecraft during longer missions, where autonomy becomes essential.
Commander Reid Wiseman and pilot Victor Glover are scheduled to repeat the test on Flight Day 8, allowing ground teams to compare performance across different crew members.
Manual control remains a backup capability in modern spacecraft, but NASA continues to treat it as a core skill. In deep space, where delays in communication can limit ground intervention, astronauts must be able to operate independently if needed.
Lunar flyby imaging plan finalized ahead of observation window
While piloting tests drew focus late in the day, earlier hours were spent preparing for the mission’s next major milestone: the lunar flyby.
The crew reviewed a list of imaging targets prepared by NASA’s science team, outlining specific features on the Moon that astronauts will photograph and analyze during a six-hour observation period.
That window begins at approximately 2:45 p.m. on April 6, when Orion’s main cabin windows will be oriented toward the lunar surface.
The targets include impact craters, volcanic plains formed by ancient lava flows, and structural features such as ridges and fractures. By documenting variations in brightness, texture, and color, astronauts will contribute data that helps scientists interpret the Moon’s geological history.
Unlike earlier missions that passed close to the surface, Orion will observe the Moon from thousands of miles away. That distance allows the crew to capture a broader view, including polar regions that are difficult to study from low-altitude trajectories.
The planning session ensures that each crew member understands their role during the flyby. Timing, camera positioning, and observational priorities must align precisely during the limited window available.
Crew life aboard Orion blends routine with milestone moments
Even as the mission advances toward the Moon, daily life aboard Orion continues to follow a structured routine.
Earlier in the day, the astronauts used one of the spacecraft’s external solar array cameras to capture selfies, offering a glimpse of the crew inside the capsule as Earth recedes in the distance. The images are expected to be transmitted to mission control in the coming days.
Such moments, while informal, serve a broader purpose. NASA often shares these images to document the human experience of spaceflight, providing visual context for missions that otherwise unfold far from public view.
The crew is scheduled to begin their sleep period at 3:15 a.m., with mission control at the NASA Johnson Space Center set to wake them at noon Central Daylight Time to begin Flight Day 5.
Structured sleep cycles remain essential. Maintaining physical and cognitive performance is critical as the mission approaches its most observation-intensive phase.
Precision trajectory allows focus on operations
Artemis II continues along a stable trajectory toward the Moon, allowing astronauts to dedicate more time to operational tasks rather than propulsion adjustments.
NASA flight controllers have already canceled multiple planned trajectory correction burns, citing the spacecraft’s accurate path. That precision reduces workload on both the crew and ground teams while conserving fuel for later mission phases.
Inside Orion, that translates into a shift in focus. The early days of the mission emphasized propulsion and navigation. Now, attention has turned to piloting validation, scientific preparation, and system monitoring.
The manual piloting demonstration is part of that transition. It marks a point where the spacecraft is no longer just being guided by automated systems but is also being tested as a vehicle that astronauts can control directly in deep space.
As the Moon draws closer, the crew’s preparations inside the capsule are becoming more deliberate. Every maneuver, checklist review, and system test feeds into the upcoming flyby.
For now, the spacecraft continues forward on a steady path, with astronauts alternating between routine tasks and moments that underscore the scale of the mission.
As the Orion spacecraft continues its path toward the Moon, the Artemis II crew will spend their fourth flight day preparing for their lunar flyby on Monday, April 6. Traveling more than 169,000 miles from Earth aboard the Orion spacecraft, astronauts are set to manually pilot the vehicle and study the Moon from a distant vantage point. The mission will also include a planned communications blackout and record-breaking distance milestone as Orion moves deeper into space.
Inside the Orion capsule, the day began with music and routine. The four astronauts, already days into deep space travel, woke to Chappell Roan’s “Pink Pony Club” before shifting into a tightly scheduled slate of mission tasks.
By the time they started work, the spacecraft had already crossed roughly 169,000 miles from Earth and was closing in on the Moon, which lay about 110,700 miles ahead. The numbers mark a point where Earth is no longer the dominant visual reference, and operational focus shifts toward lunar proximity.
Manual control test of Orion in deep space
Later in the day, pilot Victor Glover is scheduled to take manual control of Orion, a rare exercise designed to evaluate how the spacecraft responds to human input far beyond Earth orbit.
NASA officials have framed the test as critical for future missions, where astronauts may need to intervene directly in spacecraft navigation. The maneuver will provide engineers with data on handling characteristics, including responsiveness and stability under manual control.
The crew is also running a 24-hour acoustics test inside the cabin. Engineers are using the data to map the spacecraft’s sound environment, which affects both crew comfort and communication clarity during extended missions.
These activities reflect a broader goal of Artemis II. Beyond reaching the Moon, the mission is designed to validate systems that astronauts will rely on during longer journeys, including eventual missions to Mars.
(This artist’s concept depicts the nominal trajectory for NASA’s Artemis II test flight, an approximately 10-day mission that will send four astronauts around the Moon and back. The agency’s SLS (Space Launch System) rocket and Orion spacecraft will launch from Kennedy Space Center in Florida. Orion will fly two orbits of Earth and then venture around the Moon in a figure-eight pattern before returning to Earth.NASA/JSC/Goddard)
Lunar flyby observations and scientific targets
Preparation for the lunar flyby dominates the schedule. The six-hour observation window begins at approximately 2:45 p.m., when Orion’s main windows will face the Moon, allowing astronauts to begin detailed visual and photographic analysis.
Unlike the Apollo missions, which passed about 70 miles above the lunar surface, Orion will remain roughly 4,066 miles away at its closest point. From that distance, the crew will see the Moon as a full disk, including polar regions rarely observed in a single view.
Astronauts Reid Wiseman, Christina Koch, and Jeremy Hansen will work through a checklist of surface features identified by NASA’s science team.
They are expected to document impact craters, ancient lava plains, and fractures in the Moon’s crust. Variations in brightness and color will also be recorded, offering clues about the composition and geological history of the lunar surface.
The flyby will also create a rare viewing condition. As Orion, the Moon, and the Sun align, astronauts will witness a solar eclipse from space lasting about an hour. During that period, they will study the Sun’s outer atmosphere, known as the corona, as it becomes visible around the Moon’s edge.
NASA has also tasked the crew with watching for flashes of light caused by meteoroid impacts on the lunar surface. These observations could help scientists better understand surface hazards for future missions.
(This visualization follows the trajectory of the Orion spacecraft during the Artemis II flyby of the Moon, showing what astronauts will see out the window as they approach the Moon and fly around its far side. The flyby will last from 2:45 – 9:40 PM EDT on April 6, 2026, and marks the window of time that the Artemis II crew will be close enough to the Moon to make scientific observations and Orion’s windows will be pointed toward the Moon. The angle of the Sun’s illumination of the Moon will change throughout the period based on the shifting positions of the Sun, Moon, and spacecraft — revealing both familiar nearside terrain and portions of the far side not visible from Earth. This visualization, compressed from seven hours to one minute, includes Earthrise and Earthset, and a solar eclipse, which will be visible to the crew at the end of the flyby window, when the Sun will glide behind the Moon for nearly an hour from the perspective of Orion.NASA/Ernie Wright)
Communications blackout and record distance milestone
A planned communications blackout is expected when Orion passes behind the Moon. The interruption will begin around 5:47 p.m. and last approximately 40 minutes, as the Moon blocks signals between the spacecraft and NASA’s Deep Space Network.
Such blackouts are standard in lunar missions and were also experienced during earlier programs. Once Orion emerges from behind the Moon, ground stations are expected to quickly reestablish contact.
During this phase, Artemis II is also set to surpass a long-standing distance record. Orion will travel about 252,757 miles from Earth at its farthest point, exceeding the distance reached by the Apollo 13 crew.
The milestone reflects both trajectory design and the mission’s broader objective of pushing human spaceflight deeper into space than previous crewed missions.
(Orion snapped this high-resolution selfie in space with a camera mounted on one of its solar array wings during a routine external inspection of the spacecraft on the second day into the Artemis II mission. The image was downlinked by the Orion Artemis II Optical Communications System.NASA)
Life sciences research and onboard system challenges
Beyond navigation and observation, Artemis II is carrying a suite of experiments aimed at understanding how humans and biological systems respond to deep space.
One payload, known as AVATAR, includes bone marrow cells derived from crew blood samples to study immune system behavior in space. The astronauts are also collecting saliva samples as part of ongoing biomedical research.
Radiation exposure remains a key concern. Sensors provided by the German Aerospace Center, along with NASA instruments, are measuring radiation levels throughout the spacecraft.
Crew members are also wearing actigraphy devices that track sleep patterns, movement, and overall health. These data sets will inform planning for longer missions, where maintaining crew performance becomes increasingly complex.
Not all systems have operated without issue. Engineers are working to clear a wastewater vent line after a partial blockage. The crew has been instructed to use backup collection methods if necessary, although the main system remains functional.
Mission controllers at the NASA Johnson Space Center have again canceled a planned trajectory correction burn, confirming that Orion remains on its intended path. Instead, the spacecraft will be oriented toward the Sun to help resolve the vent issue.
Expanding communications capabilities in deep space
In parallel with crew operations, Orion’s optical communications system has surpassed 100 gigabytes of data transmitted back to Earth.
The system uses laser-based transmission, allowing higher data rates than traditional radio signals. NASA officials see the technology as essential for future missions that will require rapid transmission of high-resolution imagery and scientific data.
As Artemis II approaches its lunar flyby, the mission has shifted into a phase where precision operations, scientific observation, and human endurance intersect. The spacecraft continues on a trajectory that requires no correction, while inside, astronauts prepare to document the Moon from a distance no crew has experienced in decades.
The crew of Artemis II moved into preparation mode on April 6 as their spacecraft, Orion spacecraft, continued its trajectory toward a lunar flyby. The outbound trajectory correction burn was canceled after flight controllers confirmed the spacecraft remained on course. Astronauts focused on cabin readiness, medical drills, and system checks as the mission passed its halfway point to the Moon.
The four astronauts aboard Artemis II are settling into the rhythms of deep space travel as their spacecraft closes in on a critical phase of the mission. By Monday afternoon, the crew had shifted focus from major propulsion events to preparing the Orion capsule for sustained lunar observation, a period that will define the mission’s operational success.
“We all had a collective expression of joy at that… We can see the Moon out of the docking hatch right now. It’s a beautiful sight.” –Christina KOCH, NASA Astronaut (Artemis II Mission)
Mission controllers at the NASA Johnson Space Center confirmed that the first planned outbound trajectory correction burn was no longer necessary. The spacecraft’s path, they said, remained precise enough to meet mission parameters without adjustment. That decision removed one of three scheduled trajectory maneuvers designed to fine-tune Orion’s route to the Moon.
Inside the capsule, the change translated into a different kind of workload. Rather than executing propulsion tasks, the crew began configuring their living and observation environment for the upcoming lunar flyby window.
Victor Glover, Jeremy Hansen, and Reid Wiseman work together inside the Orion spacecraft on their way to the Moon.
Orion cabin preparation for lunar observation phase
Cabin preparation is not cosmetic. It involves reconfiguring equipment, securing loose items, and ensuring all observation tools are accessible during the Moon flyby. Astronauts must also adjust lighting, camera systems, and window access points to capture scientific data and imagery.
NASA officials have described this phase as one of the most human-centered parts of the mission. The spacecraft, which has operated largely as a transport vehicle until now, becomes a workspace and observation platform as it approaches lunar proximity.
Crew members spent part of the day organizing onboard equipment and verifying that all systems required for observation are functioning within expected parameters. This includes environmental controls, onboard computing systems, and manual override mechanisms.
Alongside technical preparation, astronauts continued routine health maintenance. Exercise sessions remain a daily requirement to counter the effects of microgravity on muscles and bone density. Medical response drills were also conducted, simulating potential emergencies that could arise far from Earth.
These drills are not theoretical. NASA requires crews to demonstrate the ability to respond to medical situations independently, given the communication delays and physical distance involved in deep space missions.
Deep space systems testing and mission timeline adjustments
The crew also tested Orion’s emergency communications system, a critical component designed to maintain contact with Earth under degraded conditions. Engineers on the ground monitor these tests closely, using them to validate system redundancy and resilience.
Deep space communication differs significantly from low Earth orbit operations. Signal delays increase, and the margin for error narrows. Testing ensures that backup systems can function if primary channels fail.
NASA’s decision to cancel the trajectory correction burn underscores the precision of the spacecraft’s navigation systems. According to mission control, Orion’s current trajectory aligns closely with pre-flight calculations, reducing the need for mid-course corrections.
That precision has operational consequences. Fewer burns mean conservation of fuel and reduced mechanical stress on propulsion systems, both of which can extend mission flexibility.
The Artemis II timeline continues to evolve in real time. While the crew prepared for rest around 3 a.m. Central Daylight Time, mission control scheduled their wake-up for the next operational phase. The timeline reflects both planned activities and adjustments based on spacecraft performance.
Despite the technical complexity, daily life aboard Orion follows a structured routine. Sleep cycles, exercise periods, and work blocks are carefully scheduled to maintain crew health and efficiency.
For the astronauts, the mission has now entered a quieter but equally demanding stage. The high-energy launch and orbital maneuvers have given way to sustained operations, where attention to detail becomes critical.
The lunar flyby, expected soon, will serve as both a technical demonstration and a symbolic milestone. Artemis II is the first crewed mission under NASA’s Artemis program, which aims to return humans to the Moon and establish a long-term presence.
The mission builds on decades of spaceflight experience while introducing new systems designed for deep space exploration. Orion, developed specifically for missions beyond low Earth orbit, represents a shift in spacecraft design priorities, emphasizing autonomy, durability, and crew safety over extended durations.
As the spacecraft moves closer to the Moon, the crew’s preparations inside the cabin will shape how effectively they can carry out observation tasks. Every adjustment made now, from equipment placement to system checks, feeds into that moment.
For mission control teams in Houston, the cancellation of a major burn signals confidence in both the spacecraft and the planning behind it. For the astronauts, it means more time to prepare for the view ahead.
The Moon is no longer a distant objective. It is approaching, steadily, on a trajectory that no longer requires correction.
NASA confirmed on April 4 that Artemis II’s first planned trajectory correction burn was canceled after Orion remained on its precise path to the Moon. The crew, traveling toward a scheduled lunar flyby on April 6, continues operations without the need for immediate adjustments. Mission controllers in Houston determined the spacecraft’s trajectory required no correction at this stage, with future burns still available if needed.
The four astronauts aboard NASA’s Artemis II mission prepared for a maneuver that never came.
From inside the Orion spacecraft, now deep into its journey toward the Moon, the crew had readied for the first outbound trajectory correction burn, a routine adjustment designed to fine-tune their path. Instead, flight controllers on Earth made a different call.
Engineers at NASA Johnson Space Center in Houston confirmed the spacecraft was already exactly where it needed to be. The burn was called off.
Artemis II trajectory correction burn canceled due to precise navigation
The canceled maneuver was the first of three planned trajectory correction burns in the Artemis II mission timeline. These burns are typically used to adjust a spacecraft’s velocity and direction after major propulsion events, ensuring it remains aligned for critical milestones like a lunar flyby.
In this case, Orion required no such adjustment.
Mission control teams determined that the spacecraft’s current trajectory remains within precise mission parameters as it continues toward its scheduled flyby of the Moon on April 6. The decision reflects the accuracy of the earlier translunar injection burn, which set Orion on its current path after departing Earth orbit.
For the crew, the change meant shifting from execution to observation. Systems remained monitored, procedures stayed in place, but the engines stayed silent.
NASA
What skipping a correction burn means for the Orion spacecraft
Canceling a planned burn is not unusual in deep-space missions. It signals that navigation targets have been met with high precision, reducing the need for course corrections.
Orion still has two additional trajectory correction opportunities built into the mission plan. Any required adjustments later in the journey can be incorporated into those future burns, giving flight controllers flexibility as the spacecraft approaches and departs the Moon.
The Artemis II mission continues to follow a carefully choreographed sequence of events, where each maneuver is backed by contingency planning. Skipping one step does not remove redundancy. It confirms it.
Inside the capsule, the crew continues routine operations as they move farther from Earth, maintaining spacecraft systems and preparing for the upcoming lunar flyby. The mission marks humanity’s first crewed journey beyond low Earth orbit since NASA’s Apollo era, a milestone that carries both technical and symbolic weight.
For now, Orion’s path requires no correction. The spacecraft remains on course, its trajectory holding steady as it closes the distance to the Moon.
NASA’s Artemis II crew began Flight Day 3 on April 4 after departing Earth’s orbit earlier in the mission, preparing for their first trajectory correction burn as Orion heads toward the Moon. The four astronauts, currently nearly 100,000 miles from Earth, are also training for lunar observations scheduled during a flyby on April 6. The day’s schedule includes spacecraft operations, medical drills, and communication system tests as the mission advances deeper into space.
The four astronauts aboard NASA’s Artemis II mission woke to music drifting through the Orion capsule, nearly 100,000 miles from Earth. Hours earlier, they had been asleep inside a spacecraft racing toward the Moon, farther from home than any crew in more than half a century.
Commander Reid Wiseman, pilot Victor Glover, mission specialist Christina Koch, and Canadian Space Agency astronaut Jeremy Hansen are now settling into the cadence of deep-space flight. Their journey marks the first time humans have traveled beyond low Earth orbit since NASA’s Apollo program ended in 1972.
Mission controllers at NASA Johnson Space Center in Houston signaled the start of the day at 1 p.m. EDT, playing “…In a Daydream,” by the Freddy Jones Band. By then, Orion was roughly 99,900 miles from Earth, closing in on the Moon, which lay about 161,750 miles ahead.
A view of Earth taken by NASA astronaut and Artemis II commander Reid Wiseman from one of the Orion spacecraft’s four main windows after completing the translunar injection burn on April 2, 2026. NASA
Trajectory correction burn Artemis II timing and purpose
The crew’s primary task later Friday is preparing for the first outbound trajectory correction burn, scheduled for 6:49 p.m. The maneuver will last about eight seconds and slightly adjust Orion’s speed by 0.7 feet per second.
That small change carries weight in deep space navigation. Engineers design these burns to fine-tune the spacecraft’s path after major propulsion events, such as the translunar injection burn completed on April 2. Using Orion’s onboard thrusters, the adjustment ensures the capsule remains precisely aligned for upcoming lunar operations.
Inside the spacecraft, the preparation involves verifying propulsion systems, monitoring navigation data, and coordinating closely with mission control. Even minor deviations can compound over hundreds of thousands of miles, making these early corrections essential.
The Artemis II crew is experiencing this process in real time, managing both the technical and human demands of deep-space travel. It is the kind of operational rhythm that defined earlier lunar missions but has not been practiced by a human crew in decades.
Lunar flyby science targets and far side observations
While engineers refine Orion’s trajectory, scientists are focusing on what the crew will see once they reach the Moon.
Teams on the ground are selecting geological targets that will be visible during a six-hour observation window on April 6, when Orion loops around the lunar surface. The alignment of the Sun, Moon, and spacecraft is expected to illuminate about 20 percent of the Moon’s far side, a region never visible from Earth.
Among the features expected to come into view are the Orientale basin, a massive impact structure, along with Pierazzo crater and Ohm crater. Some of these formations have rarely been seen directly by human eyes without optical aid.
Inside Orion, the astronauts are rehearsing for that moment. The cabin, roughly the size of two minivans, requires careful choreography in microgravity. Equipment must be secured, camera positions planned, and movement coordinated to avoid disrupting observations.
The crew will use handheld cameras equipped with 80-400 millimeter and 14-24 millimeter lenses. These tools are expected to capture high-resolution imagery of the lunar surface, contributing to scientific analysis and public engagement with the mission.
A view of Earth taken by NASA astronaut and Artemis II Commander Reid Wiseman from one of the Orion spacecraft’s window after completing the translunar injection burn on April 2, 2026. The image features two auroras (top right and bottom left) and zodiacal light (bottom right) is visible as the Earth eclipses the Sun.
Orion spacecraft health tests and deep space communications
Beyond navigation and science, Flight Day 3 also includes routine but critical health and safety exercises.
The astronauts are scheduled to conduct demonstrations of cardiopulmonary resuscitation and choking response procedures. These drills aim to evaluate how emergency medical protocols function in microgravity, where movement and physical coordination differ significantly from Earth.
Physical fitness remains another priority. Each crew member continues daily exercise using Orion’s flywheel device, designed to maintain cardiovascular health during extended missions.
Later in the day, Christina Koch will test Orion’s emergency communication systems using NASA Deep Space Network, a worldwide array of antennas that supports spacecraft far beyond Earth orbit. The test will assess how effectively Orion can transmit data as it moves deeper into space.
The spacecraft’s optical communications system has already demonstrated its ability to send high-definition video and mission data back to Earth through U.S.-based ground stations. That information is relayed directly to mission control in Houston, allowing engineers to monitor the spacecraft’s performance in near real time.
As Artemis II advances toward its lunar flyby, the crew’s day-to-day work blends precision engineering with human adaptability. Each scheduled task, from an eight-second burn to a medical drill, contributes to a mission that is reestablishing a path last traveled more than five decades ago.
For the astronauts aboard Orion, the distance from Earth continues to grow. So does the scope of what lies ahead.
Astronomers studying the exoplanet TOI-5205 b have found unexpected atmospheric properties that challenge existing models of planet formation. Using the James Webb Space Telescope, researchers observed the Jupiter-sized planet orbiting a small red dwarf star and detected unusually low heavy-element content. The findings, published this week, suggest new mechanisms may shape how giant planets form around smaller stars.
A giant planet circles a small, dim star, and astronomers are still working out how it got there.
The exoplanet TOI-5205 b, roughly the size of Jupiter, orbits a red dwarf star that is far smaller than the Sun. Systems like this are often described as unusual because standard models of planet formation struggle to explain how such a large planet could emerge from a relatively small disk of material.
Now, new observations using the James Webb Space Telescope (JWST) have added another layer to the puzzle. Researchers report that the planet’s atmosphere contains fewer heavy elements than expected, even when compared to its own host star.
The findings were published in The Astronomical Journal and led by scientists at NASA Goddard Space Flight Center, with contributions from Carnegie Institution for Science and other international partners.
JWST transit data reveals unexpected atmospheric composition
TOI-5205 b orbits its host star closely enough that it regularly passes in front of it, an event known as a transit. During these transits, the planet blocks about six percent of the star’s light, allowing astronomers to analyze its atmosphere.
Using spectrographs aboard JWST, researchers split the starlight filtering through the planet’s atmosphere into different wavelengths. This technique reveals the chemical composition of the gases surrounding the planet.
The results showed the presence of methane and hydrogen sulfide, both commonly found in gas giant atmospheres. But what stood out was the relative lack of heavier elements, often referred to as metallicity in astronomy.
The planet’s atmosphere appears less enriched in heavy elements than Jupiter, and even less than its own host star. That runs counter to expectations. In most known systems, giant planets tend to have atmospheres richer in heavy elements than their stars.
“Forbidden” planet raises questions about how worlds form
TOI-5205 b belongs to a class sometimes called giant exoplanets around M dwarf stars, or GEMS. These systems are rare because smaller stars are thought to have less material available in their protoplanetary disks, making it harder to form large planets.
The existence of TOI-5205 b already challenged that assumption when it was confirmed in 2023 using data from the Transiting Exoplanet Survey Satellite (TESS). The new atmospheric findings deepen the mystery.
Researchers expected that if such a planet formed, it would show clear signs of heavy-element enrichment. Instead, the data suggests the opposite.
To interpret the results, scientists used models of planetary interiors developed at the University of Zurich. These models indicate that while the planet as a whole may be rich in heavier elements, those materials could be concentrated deep inside.
That separation between interior and atmosphere points to a process where heavy elements migrate inward during formation, leaving the outer layers relatively depleted.
An artist’s conception of the gas giant planet TOI-5205 b orbiting a small, cool red dwarf star. Credit-Katherine Cain, Carnegie Science.
New clues about early planetary evolution
The findings suggest that TOI-5205 b may have experienced a more complex formation process than previously thought. One possibility is that the planet formed quickly, capturing large amounts of hydrogen and helium before heavier elements could mix evenly throughout its structure.
Another possibility involves limited mixing between the planet’s interior and its atmosphere, preventing heavier elements from rising to observable levels.
The study also points to a carbon-rich, oxygen-poor atmosphere, which could influence how clouds form and how heat moves through the planet’s outer layers.
Astronomers plan to expand their observations through a broader program focused on similar systems. By studying more giant planets around small stars, researchers hope to determine whether TOI-5205 b is an outlier or part of a larger pattern.
For now, the planet stands as a case that does not fit neatly into existing models. A massive world orbiting a modest star, with an atmosphere that defies expectations.
Astronomers in Japan have identified a new phase in early star formation, where young protostars release magnetic energy and form large gas rings. The study, published in The Astrophysical Journal Letters, used observations from the Atacama Large Millimeter/submillimeter Array in Chile to examine a stellar nursery in the Taurus Molecular Cloud. Researchers say the findings help explain how newborn stars shed excess energy and stabilize during their earliest stages.
A newborn star, still hidden inside a dense cocoon of gas and dust, appears to “sneeze” out energy into space. That release, researchers say, may shape how stars like the Sun take form.
A research team from Kyushu University and Kagawa University in Japan reports that young protostars can generate massive, warm rings of gas extending about 1,000 astronomical units from the star. The findings, published in The Astrophysical Journal Letters, point to a process in which magnetic energy is expelled from the protostellar disk during early growth.
The study focuses on a critical stage of stellar evolution, when a protostar gathers mass from a surrounding disk of gas and dust. This disk, known as the protostellar disk, plays a central role in shaping the star and any future planetary system.
ALMA observations reveal hidden structures in stellar nurseries
Directly observing newborn stars has long posed a challenge for astronomers. Protostars form inside stellar nurseries, regions filled with dense gas and dust that block visible light.
To overcome that barrier, the research team relied on the Atacama Large Millimeter/submillimeter Array (ALMA), a network of radio telescopes located in Chile. ALMA allows scientists to detect radio wavelengths that pass through dust clouds, revealing structures otherwise obscured.
Using ALMA, the team studied a protostar within the Taurus Molecular Cloud, a nearby star-forming region. While the Sun is about 4.6 billion years old, the object under observation is far younger, estimated to be under 100,000 years old.
Earlier work by the same group identified smaller, spike-like structures around protostars, roughly 10 astronomical units in size. These features, driven by magnetic activity, were described by researchers as “sneezes” that help expel excess energy.
The new study expands that picture. Data collected from a molecular cloud core known as MC 27 revealed a much larger, ring-shaped structure surrounding the young star.
Magnetic “sneezes” may regulate early star formation
Researchers found that the ring is slightly warmer than the surrounding gas, suggesting it formed through energetic processes linked to magnetic fields.
The team proposes that magnetic fields threading through the protostellar disk can eject both matter and energy outward. These larger-scale “sneezes” generate shock waves that heat the surrounding gas, forming the observed ring structure.
This mechanism could play a stabilizing role. During early formation, protostars accumulate energy rapidly as material falls inward. Without a way to release that energy, the process could become unstable.
By expelling magnetic flux and matter, the protostar may regulate its own growth, allowing it to evolve into a stable main-sequence star. The findings suggest that such activity is not limited to small-scale features but can extend across vast distances in the surrounding environment.
The discovery also raises questions about how common these structures are. The researchers described the ring as unexpectedly clear, noting that they had not anticipated observing such a defined feature.
Next steps focus on broader observations across star-forming regions
The study marks an early step in understanding this phenomenon. Researchers plan to gather higher-resolution observations using ALMA to examine what lies inside these rings and how they evolve over time.
They also intend to analyze archival data from other regions of space to determine whether similar rings appear around different protostars. Expanding the dataset could help establish whether the process is universal or limited to specific environments.
The findings arrive after a decade of observations and analysis by the team. Researchers say continued data collection and debate within the scientific community will be key to refining the model.
For now, the results offer a clearer picture of a chaotic phase in star birth. Gas flows, magnetic fields, and shock waves interact in ways that produce structures both ordered and irregular, shaping the early life of stars.
What begins as a dense cloud of dust and gas may, through bursts of magnetic energy, carve out vast rings in space.
NASA’s Artemis II crew began their journey to the Moon on April 2 after Orion completed a translunar injection burn lasting nearly six minutes. The maneuver sent astronauts Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen out of Earth orbit for the first time since 1972. The spacecraft is now on a trajectory toward a planned lunar flyby, with scientific observations scheduled in the coming days.
For the first time in more than half a century, humans are no longer orbiting Earth. They are heading for the Moon.
At 7:49 p.m. Eastern Time on April 2, NASA’s Orion spacecraft ignited its engine and began accelerating out of Earth’s gravitational hold. The burn lasted five minutes and 50 seconds. When it ended, Artemis II had crossed a threshold not reached since the Apollo era.
The mission, led by the National Aeronautics and Space Administration, is now on a trajectory that will carry its crew around the Moon and back.
Translunar injection burn performance and Orion trajectory
The translunar injection burn marked the mission’s most consequential maneuver to date. Orion’s main engine, capable of producing up to 6,000 pounds of thrust, fired as planned, pushing the spacecraft onto a path toward the Moon.
At the time of ignition, Orion had a mass of about 58,000 pounds. During the burn, it consumed roughly 1,000 pounds of propellant, according to NASA mission data.
The maneuver required precise timing and alignment. Even small deviations could shift the spacecraft’s trajectory over the distance between Earth and the Moon.
With the burn complete, Orion is no longer bound to low Earth orbit. It is now traveling along a translunar path that will bring the crew into the Moon’s vicinity in the coming days.
The milestone places Artemis II alongside historic missions such as Apollo 17, which marked the last time astronauts traveled beyond Earth orbit.
NASA
Crew operations, exercise systems, and onboard experiments
As Orion moves deeper into space, the crew has begun settling into daily operations designed for long-duration missions.
NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch are joined by Jeremy Hansen of the Canadian Space Agency.
The astronauts are using a compact flywheel exercise device to maintain physical conditioning. The system relies on a cable-based mechanism that provides resistance based on applied force, supporting both aerobic and strength exercises. It can generate loads of up to 400 pounds while weighing only about 30 pounds, a design suited to the mass constraints of deep space missions.
By comparison, exercise equipment aboard the International Space Station weighs several thousand pounds and occupies far more space. Orion’s system is designed to deliver similar benefits in a much smaller footprint.
During exercise sessions, ground teams monitored Orion’s air revitalization system, which regulates oxygen, carbon dioxide, and cabin conditions. Engineers also assessed how crew movement affects spacecraft stability.
The crew has also completed checks on the AVATAR scientific payload, part of the mission’s broader research objectives.
Trajectory for Artemis II, NASA’s first flight with crew aboard SLS, Orion to pave the way for long-term return to the Moon, missions to Mars
Communications glitch resolved and lunar science plan begins
Engineers investigated a brief loss of two-way communication that occurred earlier in the mission. NASA determined the issue stemmed from a ground configuration problem involving the Tracking and Data Relay Satellite system.
The system, which supports communication between spacecraft and Earth, was quickly reconfigured. NASA reported no impact on mission operations.
Attention is now shifting toward the upcoming lunar flyby. A dedicated science team has begun developing a Lunar Targeting Plan, which will guide what the crew observes during a roughly six-hour window near the Moon on April 6.
The plan includes studying surface features such as impact craters, ancient lava plains, and tectonic structures. These observations are intended to support research into the Moon’s formation and the broader history of the solar system.
One planned highlight is a solar eclipse visible from Orion’s vantage point. As the Moon blocks the Sun, the crew will have an opportunity to observe the solar corona, the Sun’s outer atmosphere, and look for flashes caused by meteoroid impacts on the lunar surface.
The sequence of events marks a transition point. Artemis II has moved beyond Earth orbit and into deep space, carrying its crew toward a destinatio:n that has not hosted human visitors in decades.
NASA approved the translunar injection burn for Artemis II on April 2, clearing the Orion spacecraft to leave Earth orbit at 7:49 p.m. EDT. The burn will send astronauts Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen toward the Moon for the first time since 1972. The decision follows a mission management review confirming spacecraft readiness and system performance.
The call came from Houston after a day of checks and calculations. The answer was simple. Go.
With that, NASA cleared Artemis II to attempt the maneuver that will send its crew beyond Earth orbit. If executed as planned, the burn will place humans on a path toward the Moon for the first time in more than five decades.
The mission marks a major step for the National Aeronautics and Space Administration and its Artemis program, which aims to return astronauts to deep space operations.
Translunar injection burn timing and Orion engine performance
The translunar injection burn is scheduled to begin at 7:49 p.m. Eastern Time. Orion’s main engine will fire for five minutes and 49 seconds, providing the acceleration needed to break free from Earth’s orbit.
The engine, located on the spacecraft’s service module, produces up to 6,000 pounds of thrust. NASA compares that output to accelerating a car from zero to 60 miles per hour in about 2.7 seconds.
The burn must be executed with precise timing and orientation. Even minor deviations can alter the spacecraft’s path over the hundreds of thousands of miles between Earth and the Moon.
Flight controllers will track engine performance, guidance systems, and navigation data in real time to ensure Orion remains aligned with its intended trajectory.
NASA flight directors Rick Henfling (right) and Judd Frieling (left) sit on console in Mission Control’s White Flight Control room during NASA’s Artemis II mission launch on Wednesday, April 1, 2026. ROBERT MARKOWITZ NASA-JSC
Crew activities and first full day operations in space
Earlier in the day, the Artemis II crew began their first full schedule of in-space operations. NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch were joined by Jeremy Hansen of the Canadian Space Agency.
Mission control woke the crew at 2:35 p.m. Eastern Time with the song “Green Light” by John Legend and Andre 3000, continuing a long-standing NASA tradition of musical wake-up calls.
The astronauts moved into preparations for the burn, reviewing procedures and monitoring spacecraft systems. They also conducted their first exercise session using Orion’s flywheel-based device, designed to help maintain muscle and bone health in microgravity.
Exercise equipment is a standard feature for crewed missions, particularly those that extend beyond low Earth orbit. Maintaining physical conditioning becomes critical as mission duration increases.
The hours leading up to the burn are structured around system checks, communication with ground teams, and final readiness confirmations.
The Artemis II mission is designed as a test flight. Yet the stakes of this maneuver are clear. Once the engine fires, the crew will begin a journey that carries them away from Earth and toward the Moon, retracing a path last taken during the Apollo era.
NASA confirmed the Artemis II crew completed the perigee raise burn on April 2, firing Orion’s engine for 43 seconds to refine its orbit around Earth. The maneuver placed the spacecraft into a stable high Earth orbit ahead of a planned translunar injection later the same day. Mission managers will review system performance before approving the burn that would send astronauts toward the Moon for the first time since 1972.
The Artemis II crew woke to music and a tightly timed task. Minutes later, they were watching their spacecraft reshape its path around Earth.
Inside Orion, the capsule named Integrity, astronauts monitored systems as the engine fired for just over 40 seconds. The burn was brief. Its impact on the mission trajectory was not.
The maneuver marked another step in a sequence designed by the National Aeronautics and Space Administration to prepare astronauts for a return to deep space operations.
Perigee raise burn details and Orion orbit adjustment
The perigee raise burn began after a scheduled wake-up at 7:06 a.m. Eastern Time, when mission control in Houston signaled the crew with the song “Sleepyhead” by Young and Sick.
Shortly after, Orion’s service module main engine ignited. It burned for 43 seconds, increasing the spacecraft’s perigee, the lowest point in its orbit around Earth.
This adjustment refined Orion’s trajectory, placing it into a stable high Earth orbit. The new orbit aligns with the spacecraft’s planned path for departure toward the Moon.
Engineers design these burns to test propulsion precision under real mission conditions. Small timing or thrust variations can significantly alter a spacecraft’s trajectory over long distances.
Following the maneuver, astronauts returned to a rest cycle lasting about four and a half hours, part of a schedule structured to balance workload and recovery during the mission’s early phase.
Trajectory for Artemis II, NASA’s first flight with crew aboard SLS, Orion to pave the way for long-term return to the Moon, missions to Mars
Translunar injection burn timing and mission approval process
Attention now shifts to the next and more consequential maneuver, the translunar injection burn.
Mission management teams are scheduled to meet later in the day to assess spacecraft health, propulsion data, and navigation accuracy. Their approval is required before proceeding.
If cleared, the translunar injection burn is set for 7:49 p.m. Eastern Time. The maneuver will last five minutes and 49 seconds and is expected to increase Orion’s velocity by 1,274 feet per second.
That acceleration would push the spacecraft out of Earth orbit and onto a trajectory toward the Moon. It would mark the first time humans leave low Earth orbit since the Apollo era, which concluded with the final Moon mission in 1972.
Flight controllers will monitor engine performance and guidance systems throughout the burn. Navigation data must remain within tight tolerances to ensure Orion stays aligned with its intended path.
The Artemis II mission is designed as a test flight, but each milestone carries operational weight. With the perigee burn complete, the next decision point will determine whether the crew begins its journey beyond Earth orbit.
NASA confirmed the Artemis II crew resolved a toilet system fault aboard the Orion spacecraft on April 2 while in Earth orbit. The issue, first detected as a blinking fault light on April 1, was addressed through coordinated troubleshooting with mission control in Houston. The fix comes ahead of a scheduled perigee raise burn, a maneuver that will adjust Orion’s orbit for future deep space operations.
A minor but essential system aboard NASA’s Artemis II spacecraft briefly drew attention this week. It was not propulsion or navigation. It was the toilet.
Astronauts aboard Orion, the capsule named Integrity, reported a blinking fault light tied to the waste management system on April 1. Within hours, engineers on the ground and the crew in orbit worked through the problem together. By the next mission update, the system was back to normal operation.
The episode highlights how even routine spacecraft functions demand precision during crewed missions led by the National Aeronautics and Space Administration.
Orion spacecraft toilet issue and in-flight troubleshooting
The issue first surfaced ahead of a planned apogee raise burn, when the crew noticed a blinking fault indicator linked to Orion’s toilet system. Such warning signals are designed to flag irregularities early, even when the system continues functioning.
NASA’s mission control team at the Johnson Space Center in Houston began reviewing telemetry immediately. Engineers assessed system data while communicating directly with the astronauts to isolate the cause.
The troubleshooting process involved both software diagnostics and procedural checks inside the spacecraft. The agency did not report any hardware damage or safety risk tied to the issue.
By April 2, NASA confirmed that normal functionality had been restored. The resolution ensured that one of the spacecraft’s life-support subsystems remained fully operational as the mission continued.
Waste management systems in microgravity rely on airflow, pressure control, and precise mechanical components. Even minor anomalies require immediate attention, as they can affect crew comfort and long-duration mission readiness.
A view of the Earth’s horizon from NASA’s Orion spacecraft as it orbits above the planet during the first hours of the Artemis II test flight. NASA astronauts Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch, and CSA (Canadian Space Agency) astronaut Mission Specialist Jeremy Hansen, launched at 6:35 p.m. EDT on Wednesday, April 1, 2026, on an approximately 10-day mission around the Moon and back to Earth. NASA
Perigee raise burn timing and mission trajectory planning
With the issue resolved, the Artemis II crew is preparing for the next major step in the mission timeline. The perigee raise burn is scheduled after a planned rest period.
Perigee refers to the lowest point of a spacecraft’s orbit around Earth. Raising it changes the orbital shape, making it more stable and better suited for future maneuvers.
This burn follows an earlier apogee raise maneuver, which increased Orion’s highest orbital point. Together, the two burns define the spacecraft’s initial orbit and test its propulsion system under operational conditions.
NASA scheduled a four-hour rest period for the crew before the maneuver. Astronauts are set to wake at 7 a.m. Eastern Time on April 2 to begin preparations. After completing post-burn procedures, they will return to a second sleep cycle later in the morning.
The sequence reflects the structured rhythm of human spaceflight, where operational tasks alternate with carefully timed rest to maintain performance.
The Artemis II mission continues to build toward its broader objective: validating systems for future missions that will carry astronauts beyond Earth orbit and toward the Moon.
