Artemis II Update-13, Day 5: Crew Tests Survival Suits As Spacecraft Nears Lunar Gravity Zone

Posted on April 6, 2026 by Arun Kumar N

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.

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The day aboard Orion began with music and method.

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.

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Artemis II Update-12, Day 4: Astronauts Hand-Fly Orion, Sharpen Lunar Flyby Plan in Deep Space

Artemis II Update-11, Day 4: Crew Enters Deep Space, Lunar Flyby Prep

Artemis II Update-12, Day 4: Astronauts Hand-Fly Orion, Sharpen Lunar Flyby Plan in Deep Space

Posted on April 6, 2026 by Arun Kumar N

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.

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Artemis II Update-10, Day 3: Crew Prepares Orion Cabin As Lunar Flyby Nears Milestone

Artemis II Update-11, Day 4: Crew Enters Deep Space, Lunar Flyby Prep

Posted on April 6, 2026 by Arun Kumar N

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.

https://www.nasa.gov/wp-content/uploads/2026/04/jsc2025m000169-artemis-ii-mission-map-720.mp4?_=1

(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.

https://www.nasa.gov/wp-content/uploads/2026/04/lunarflyby-1min-2160p30small.mp4?_=2

(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.

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Artemis II Update-9, Day 3: NASA cancels first trajectory correction burn

Artemis II Update-10, Day 3: Crew Prepares Orion Cabin As Lunar Flyby Nears Milestone

Posted on April 6, 2026 by Arun Kumar N

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.

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Artemis II Update-9, Day 3: NASA cancels first trajectory correction burn

Posted on April 4, 2026 by Sridhar P

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.

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Artemis II Update-8, Day 3 : Crew prepares for first correction burn, readies lunar flyby tasks

Posted on April 4, 2026 by Sridhar P

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.

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TOI-5205 b Exoplanet Around Red Dwarf Reveals Unusual Atmosphere: JWST Study

Posted on April 3, 2026 by Sridhar P

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.

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Astronomers Spot “Sneezing” Baby Stars Creating Massive Rings In Space

Posted on April 3, 2026 by Sridhar P

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.

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Artemis II Update-7, Day 2 : Orion completes Translunar Injection burn , crew begins journey to Moon

Posted on April 3, 2026 by Sridhar P

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.

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Artemis II Update-6, Day 2 : Crew, houston poll ‘Go’ for Translunar injection burn, crew prepares for Moon flight

Posted on April 3, 2026 by Sridhar P

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.

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Artemis II Update-5: perigee raise burn complete, translunar injection burn next

Artemis II Update-4: Crew completes proximity test, perigee raise burn up next

Artemis II Update-5: Perigee raise burn complete, translunar injection burn next

Posted on April 3, 2026 by Sridhar P

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.

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Artemis II Crew and Ground Teams Successfully Troubleshoot Orion’s Toilet Glitch

Posted on April 3, 2026 by Sridhar P

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.

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Artemis II Update-4: Crew completes proximity test, perigee raise burn up next

Posted on April 3, 2026 by Sridhar P

NASA’s Artemis II crew completed a proximity operations test on April 2, maneuvering the Orion spacecraft near a detached rocket stage in Earth orbit. The demonstration, lasting about 70 minutes, tested manual control systems and gathered data critical for future lunar missions. The crew now prepares for a perigee raise burn, while engineers continue troubleshooting a minor onboard toilet system issue.

The astronauts aboard NASA’s Artemis II mission spent part of April 2 guiding their spacecraft through a tightly choreographed exercise hundreds of miles above Earth.

Inside Orion, the capsule named Integrity, the crew manually steered within close range of a discarded rocket stage, testing how precisely humans can control the spacecraft in space. The task lasted just over an hour. It marked one of the first hands-on demonstrations of Orion’s maneuverability under crew control.

The exercise is part of a broader effort by the National Aeronautics and Space Administration (NASA) to validate systems before sending astronauts farther into deep space, including eventual missions to the Moon under the Artemis program.

The proximity operations demonstration centered on Orion’s ability to approach and move away from another object in orbit. For this test, the crew used the detached interim cryogenic propulsion stage, or ICPS, as a reference target.

The ICPS, a temporary upper stage used during launch, had already separated from the spacecraft. It remained nearby long enough for the astronauts to conduct controlled approach and retreat maneuvers.

During the roughly 70-minute session, the crew adjusted Orion’s position repeatedly, testing navigation, thruster response, and onboard guidance systems. These maneuvers simulate conditions required for future missions that may involve docking or operating near other spacecraft.

At the end of the exercise, Orion executed an automated departure burn, increasing its distance from the ICPS. The stage is scheduled to perform a disposal burn, sending it into Earth’s atmosphere over a remote Pacific region, according to NASA mission updates.

The demonstration provides engineers with real-time data on how Orion performs under manual control, a capability considered essential for complex operations during lunar missions.

Alongside the crewed mission, four small satellites known as CubeSats launched as secondary payloads aboard the Space Launch System (SLS).

CubeSats are compact, shoebox-sized spacecraft designed for targeted scientific experiments. They will deploy after the Orion stage adapter separates from the main spacecraft.

Each satellite carries a distinct research objective:

ATENEA, developed by Argentina’s national space agency, focuses on radiation shielding and communication systems in high Earth orbit.
Space Weather CubeSat-1, built by the Saudi Space Agency, will measure solar radiation, X-rays, and magnetic field activity.
TACHELES, from the German Aerospace Center, is testing electrical systems for future lunar logistics vehicles.
K-Rad Cube, developed by the Korea AeroSpace Administration, will study radiation effects across the Van Allen belts, regions of charged particles surrounding Earth.

The CubeSat deployments expand the mission’s scientific output, offering data on space weather and radiation environments that astronauts may encounter during longer missions.

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

Perigee raise burn planned as engineers monitor onboard issue

Attention now shifts to the next key maneuver, the perigee raise burn, scheduled after the crew’s rest period.

Perigee refers to the lowest point in a spacecraft’s orbit around Earth. Raising it adjusts the shape of the orbit and prepares Orion for later phases of the mission, including potential translunar trajectories.

The maneuver follows an earlier apogee raise burn, which increased the spacecraft’s highest orbital point. Together, these burns define Orion’s initial orbital path and test propulsion performance under operational conditions.

Before the next burn, the crew completed routine spacecraft checks. During a systems review, they reported a blinking fault light in the onboard toilet system.

NASA ground teams are analyzing the data and working with the crew to diagnose the issue. No broader system impacts have been reported in official updates.

After a scheduled four-hour rest period, the astronauts are set to wake at 7 a.m. Eastern Time on April 2 to prepare for the maneuver. The timeline includes post-burn activities followed by another sleep cycle later in the morning.

The sequence of tests, adjustments, and troubleshooting reflects the mission’s dual purpose: demonstrating Orion’s readiness for deep space while gathering operational data from a live crewed environment.

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Artemis II Update-3: Apogee Raise burn complete, Crew prepares critical Proximity Test

Posted on April 2, 2026 by Sridhar P

NASA confirmed the Artemis II crew completed the apogee raise burn on April 2, increasing Orion’s orbital high point. The mission now transitions toward a proximity operations demonstration that will test manual spacecraft control near another object. Engineers continue to monitor a minor onboard system issue as the crew prepares for the next phase.

The spacecraft climbed higher. The mission grew more precise.

The National Aeronautics and Space Administration confirmed that Artemis II successfully executed its apogee raise maneuver, a key step in refining the Orion spacecraft’s orbit around Earth. The burn, powered by the interim cryogenic propulsion stage’s RL10 engine, increased the spacecraft’s highest orbital point and aligned it for upcoming tests.

The maneuver follows earlier orbital adjustments and forms part of a carefully sequenced plan to prepare Orion for operations beyond low Earth orbit. NASA officials said the spacecraft remains in stable condition, with power generation and thermal systems operating within expected limits.

Artemis II apogee raise burn and orbit shaping

The apogee raise burn works in tandem with the previously completed perigee adjustment. Together, these maneuvers define the shape and altitude of Orion’s orbit, ensuring the spacecraft is positioned correctly for subsequent demonstrations and trajectory changes.

Mission controllers at Johnson Space Center continue to track performance data, confirming that propulsion and navigation systems responded as expected.

Ahead of the burn, astronauts also began configuring the spacecraft for sustained operations in orbit. That included routine system checks such as evaluating the onboard toilet system. During that procedure, the crew reported a blinking fault light, which engineers are now analyzing.

NASA has not indicated that the issue affects mission safety, but teams are working with the crew to identify its cause and resolve it.

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

Proximity operations demonstration and manual control testing

The next phase of Artemis II will focus on proximity operations, a critical test of Orion’s ability to maneuver near another spacecraft.

The demonstration will use the detached upper stage of the Space Launch System as a reference target. Astronauts will guide Orion, named Integrity, through a series of controlled movements to evaluate how the spacecraft performs under manual control.

Before the maneuver begins, communications will transition from NASA’s Near Space Network to the Deep Space Network, systems that support spacecraft from launch through deep-space operations.

During the approximately 70-minute exercise, Orion will approach the upper stage to within about 300 feet before pausing. The crew will then take manual control, using onboard hand controllers to make precise adjustments and assess responsiveness.

At a closer range of roughly 30 feet, astronauts will evaluate the spacecraft’s fine handling capabilities. These maneuvers will rely on the reaction control system thrusters located on Orion’s European-built service module.

NASA said the demonstration also includes an automated backflip maneuver, allowing Orion to reorient and face the target stage. The test will generate detailed data on navigation and control systems, including measurements from the spacecraft’s docking camera.

These data points are expected to inform future missions that require rendezvous and docking in lunar orbit, where traditional GPS systems are not available.

Preparing for future lunar operations

At the conclusion of the demonstration, Orion will execute an automated departure burn to safely distance itself from the upper stage. The stage will then perform a disposal maneuver, re-entering Earth’s atmosphere over a remote region of the Pacific Ocean.

NASA said the spacecraft’s systems remain stable as the crew transitions into this next phase. Solar arrays continue to generate power, and environmental conditions inside Orion remain within predicted ranges.

Public interest in the mission’s technical milestones remains high. “This is the kind of test that proves whether astronauts can really control the vehicle in deep space,” wrote Reddit user LunarOpsWatcher in a post with more than 1,100 upvotes, highlighting the importance of manual maneuvering capabilities.

Artemis II is designed as a test mission, but each milestone carries implications for future exploration. The proximity operations demonstration, in particular, addresses a key requirement for sustained human activity beyond Earth orbit.

With the apogee burn complete, Orion now moves into one of its most intricate tests yet.

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Artemis II Update-1: Orion Completes Proximity Operations, Perigee Burn Next

Artemis II Update-2 : Perigee Raise Burn Completed with brief Communications Loss, NASA Probes

Posted on April 2, 2026 by Sridhar P

NASA confirmed the Artemis II crew completed a perigee raise maneuver on April 2, refining Orion’s orbit around Earth. A brief communications loss occurred shortly after the burn but was quickly resolved with no reported impact on crew safety. The agency will hold a press conference from Kennedy Space Center as the mission prepares for its next orbital milestone.

A routine engine burn sharpened Artemis II’s orbit. Minutes later, mission control lost contact. Then the signal came back.

The National Aeronautics and Space Administration said the Orion spacecraft successfully completed its perigee raise maneuver, one of the key early steps in shaping its path around Earth. The burn used the interim cryogenic propulsion stage’s RL10 engine to lift the spacecraft’s lowest orbital point, refining its trajectory for later mission phases.

The maneuver followed earlier orbital adjustments and forms part of a sequence designed to prepare Orion for operations beyond low Earth orbit. NASA officials said the burn occurred as planned, with precise timing required to achieve the desired orbital change.

Artemis II perigee raise burn and orbital adjustments

The perigee raise maneuver increases the spacecraft’s minimum altitude during its orbit. Along with a separate apogee raise burn, which affects the highest orbital point, these adjustments create a stable and elongated orbit suitable for further testing.

NASA said these burns are critical in preparing Orion for a planned high Earth orbit phase lasting about 23.5 hours. During that period, astronauts and ground teams will conduct system checkouts before committing to the next stage of the mission.

The work is coordinated through mission control at Johnson Space Center, where engineers track propulsion performance, navigation data, and onboard systems in real time.

A view over the shoulders of NASA astronauts Victor Glover (left) and Reid Wiseman (right), pilot and commander, respectively, inside the Orion spacecraft as they participate in a proximity operations demonstration. This demonstration tests the spacecraft’s ability to manually maneuver relative to another spacecraft, the interim cryogenic propulsion stage, after separation, using its onboard navigation sensors and reaction control thrusters. NASA

Brief communication dropout under review

Shortly after completing the burn, ground teams experienced a temporary loss of communications with the spacecraft. NASA said controllers were unable to receive data from Orion or the crew for a brief period.

The interruption resolved quickly. Astronauts reported that they continued to hear communications from the ground throughout the event, indicating that onboard systems remained functional.

NASA said engineers are reviewing telemetry to determine the cause of the dropout. The agency has not indicated any impact on mission safety or trajectory.

Such communication gaps, while uncommon, are treated as high-priority review items during test missions. Artemis II, as a crewed test flight, is designed to expose and evaluate system behavior under real operating conditions.

NASA press conference and mission leadership

NASA will hold a post-launch press conference at 8 p.m. EDT from the Kennedy Space Center to provide further updates.

Scheduled participants include NASA Administrator Jared Isaacman, Associate Administrator Amit Kshatriya, Lori Glaze, who serves as acting associate administrator for the Exploration Systems Development Mission Directorate, and Norm Knight, director of the Flight Operations Directorate.

The briefing is expected to address the completed maneuver, the communication anomaly, and upcoming mission steps.

Public attention remains fixed on the mission’s progress. “Even a small signal loss gets people nervous, but that’s why they test,” wrote Reddit user SpaceTrackLive in a post that drew more than 900 upvotes, reflecting cautious optimism among spaceflight observers.

Next milestone: apogee raise burn and system checks

The next major step for Artemis II is the apogee raise maneuver. This burn will increase the highest point of Orion’s orbit, complementing the earlier perigee adjustment.

Together, these orbital changes define the spacecraft’s path before it transitions into high Earth orbit operations. NASA said this phase will allow for extended system verification and crew activity in preparation for the mission’s later trajectory toward the Moon.

Engineers view these incremental milestones as essential. Each burn, test, and anomaly review contributes to a broader goal: confirming that Orion can safely carry astronauts through deep space and back.

For now, Artemis II continues to move step by step. One maneuver completed, one anomaly under review, and another burn on the horizon.

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Artemis II Update-1: Orion Completes Proximity Operations, Perigee Burn Next

Posted on April 2, 2026 by Sridhar P

Astronauts aboard NASA’s Artemis II mission completed a key proximity operations test on April 2 while orbiting Earth. The maneuver involved controlled movements around a detached rocket stage to evaluate spacecraft handling. With CubeSat deployments ahead and a minor onboard system issue under review, the crew is now preparing for a perigee raise burn to refine Orion’s orbit.

A shoebox-sized satellite deployment and a blinking fault light now share space in NASA’s latest Moon mission update.

The National Aeronautics and Space Administration confirmed that astronauts aboard Artemis II have completed one of the mission’s earliest and most technical tests. The crew piloted the Orion spacecraft, named Integrity, through a series of close-range maneuvers around a detached rocket stage, simulating scenarios required for future docking and deep-space operations.

The 70-minute exercise marked the mission’s proximity operations demonstration. Using the interim cryogenic propulsion stage, or ICPS, as a reference point, astronauts conducted controlled approach and retreat sequences to assess manual navigation capabilities in orbit.

At the end of the test, Orion executed an automated departure burn to safely distance itself from the stage. NASA said the ICPS will later perform a disposal burn, re-entering Earth’s atmosphere over a remote part of the Pacific Ocean.

Orion proximity operations test and orbital maneuver plan

The proximity operations test is central to Artemis II’s role as a proving mission. Unlike future lunar landings, this flight focuses on validating systems and crew performance under real spaceflight conditions.

NASA officials said the demonstration provided critical data on how Orion behaves during manual piloting near another object. These conditions are expected to be essential for future missions involving docking, assembly, or logistics operations in lunar orbit.

The crew now turns to the next phase of orbital adjustments. After completing an earlier apogee raise maneuver, mission controllers are preparing for a perigee raise burn. This engine firing will increase the lowest point of Orion’s orbit around Earth, refining its trajectory for eventual translunar injection.

The sequence of burns shapes the spacecraft’s path before it departs Earth’s gravitational influence. These adjustments are necessary to ensure precision as the mission transitions toward its planned lunar flyby.

CubeSat deployments expand international science efforts

Alongside the crewed mission, Artemis II is carrying four CubeSats, compact satellites designed for scientific research and technology demonstrations.

These payloads, housed within the Space Launch System adapter, will deploy after separation from Orion. Each satellite represents an international collaboration and targets a different aspect of space science.

Argentina’s ATENEA CubeSat will study radiation shielding and communication systems. The Saudi Space Agency’s Space Weather CubeSat-1 will measure solar radiation and magnetic fields. Germany’s TACHELES mission will test components for future lunar logistics systems. South Korea’s K-Rad Cube will analyze radiation exposure and its biological effects across the Van Allen belts.

NASA describes CubeSats as small but versatile tools that can extend mission science at relatively low cost. Their deployment during Artemis II adds a layer of experimentation beyond the primary crewed objectives.

Toilet system issue under review during mission operations

Amid the technical milestones, engineers are also tracking a minor onboard issue.

During routine spacecraft configuration checks, the crew reported a blinking fault light in Orion’s toilet system. Mission control teams at Johnson Space Center are analyzing telemetry and working with astronauts to troubleshoot the problem.

NASA has not indicated that the issue poses a risk to crew safety or mission objectives. Such anomalies are not uncommon during test flights, where systems are evaluated under operational conditions for the first time.

The crew’s schedule includes carefully timed rest periods between mission activities. After a four-hour sleep cycle, astronauts are set to wake at 7 a.m. EDT to prepare for the upcoming burn, before returning to rest later in the day.

Public reaction to the update has reflected both enthusiasm and curiosity about the mission’s technical details. “It’s fascinating to see them actually test manual flying like this,” wrote Reddit user OrbitalWatcher, in a post that drew more than 1,200 upvotes, noting that such maneuvers are rarely visible to the public.

Preparing for deeper space operations

Artemis II continues to function as a systems validation mission, bridging the gap between uncrewed tests and future lunar landings.

Each milestone, from proximity operations to orbital burns, contributes to a broader objective. NASA aims to confirm that Orion and its supporting systems can reliably carry astronauts beyond low Earth orbit and back.

The upcoming perigee raise burn represents another step in that process. Once completed, it will help finalize the spacecraft’s orbit before the mission advances toward its lunar trajectory.

For engineers and mission planners, these incremental steps are essential. They provide the data needed to support more complex operations in future Artemis missions, including sustained human presence on the Moon.

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Artemis II Mission Launch: NASA Sends Crew on First Moon Flyby in 50 Years

Posted on April 2, 2026 by Sridhar P

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.

The countdown ended just after dusk in Florida. At 6:35 p.m. EDT on Wednesday, a new chapter in human spaceflight lifted off from Launch Pad 39B.

The National Aeronautics and Space Administration sent four astronauts toward the Moon aboard its Artemis II mission, marking the first crewed lunar journey in more than five decades. The launch took place at the agency’s Kennedy Space Center, the same historic ground that supported Apollo-era missions.

Aboard the Orion spacecraft were NASA astronauts Reid Wiseman, Victor Glover and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen. The 10-day mission is designed as a test flight, with no lunar landing planned, but its implications extend far beyond a single journey.

“Today’s launch marks a defining moment for our nation and for all who believe in exploration,” NASA Administrator Jared Isaacman said in an official statement. “Artemis II builds on the vision set by President Donald J. Trump, returning humanity to the Moon for the first time in more than 50 years.”

Artemis II mission objectives and timeline

The mission began with the ignition of NASA’s Space Launch System (SLS), the most powerful rocket the agency has developed. About 49 minutes after liftoff, the rocket’s upper stage fired to place Orion into an elliptical orbit around Earth. A second burn is scheduled to push the spacecraft into a high Earth orbit extending roughly 46,000 miles from the planet.

From there, the spacecraft will separate and continue independently. Engineers confirmed that Orion deployed its solar arrays shortly after reaching space, allowing it to draw energy from the Sun.

The crew will spend about a day in high Earth orbit conducting system checks and a manual piloting demonstration. These early operations are designed to test the spacecraft’s handling and ensure its readiness for deeper space travel.

If all systems perform as expected, mission controllers at Johnson Space Center will authorize a translunar injection burn. This maneuver, lasting about six minutes, will send Orion on a trajectory toward the Moon.

NASA Associate Administrator Amit Kshatriya described the mission as a proving ground. “Artemis II is a test flight, and the test has just begun,” he said. “Over the next 10 days, the crew will put Orion through its paces so future missions can land on the Moon with confidence.”

Lunar flyby and scientific goals

The spacecraft is scheduled to reach the Moon for a flyby on April 6. During this phase, the astronauts will travel around the lunar far side, an area rarely seen directly by human eyes.

NASA officials said the lighting conditions during the flyby could provide enhanced visibility of surface features such as ridges, crater rims and slopes. The crew is expected to capture images and make observational reports that will inform future missions.

The mission also includes scientific experiments, including human health studies designed to assess how astronauts respond to deep-space conditions. These findings will contribute to planning for longer missions, including eventual journeys to Mars.

Alongside the primary mission, the rocket’s upper stage will deploy four CubeSats developed by international partners. These small satellites will conduct independent research and technology demonstrations, highlighting the global collaboration involved in Artemis.

Return to the Moon after Apollo

Artemis II is the first crewed mission in NASA’s Artemis program, which aims to establish a sustained human presence on the Moon. The last time astronauts traveled beyond low Earth orbit was during the Apollo program in the early 1970s.

The current mission does not include a landing, but it sets the stage for future Artemis missions that will attempt to place astronauts on the lunar surface. NASA has said the long-term goal is to build infrastructure that supports extended stays on the Moon.

The program also serves as a stepping stone for missions to Mars, with engineers using Artemis to test technologies and operational strategies required for deeper space exploration.

Public reaction to the launch reflected a mix of excitement and historical awareness. One widely shared comment on Reddit captured the moment’s significance. “We’re finally going back to the Moon with people on board,” wrote user AstroFan92 on a thread with more than 3,000 upvotes, calling it “a milestone that feels like history repeating itself in the best way.”

What comes next for Artemis

Following the lunar flyby, Orion will begin its return trajectory to Earth. The mission is expected to conclude with a splashdown in the Pacific Ocean. Recovery teams will retrieve the crew and spacecraft for post-mission analysis.

NASA officials describe Artemis II as a foundation mission. It tests life support systems, validates navigation and communication technologies, and confirms that astronauts can safely travel beyond low Earth orbit using the new spacecraft.

Future Artemis missions will build on these results. Planned objectives include landing astronauts on the Moon, establishing a long-term lunar presence, and eventually preparing for human exploration of Mars.

For now, Artemis II represents a return. Not just to the Moon, but to a scale of ambition that defined an earlier era of spaceflight.

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RRI scientists trace mysterious X-ray bursts to wobbling disk in distant galaxy

Posted on March 30, 2026 by Sridhar P

Scientists from the Raman Research Institute have identified a possible cause behind irregular X-ray bursts from a distant space object, based on observations spanning 2001 to 2021. The study focuses on ULX M74 X-1, an ultraluminous X-ray source in the spiral galaxy M74, using data from NASA and European space telescopes. Researchers suggest that a wobbling accretion disk may explain the unusual and unpredictable flaring pattern observed over time.

A distant object in space has been flashing bursts of energy in a pattern that refuses to settle into rhythm. Indian scientists now think they know why.

Researchers at the Raman Research Institute in Bengaluru have analyzed years of observational data to explain the unusual behavior of a powerful X-ray source known as ULX M74 X-1. Their findings point to a wobbling disk of matter spiraling into a compact object, possibly a black hole or neutron star.

ULX M74 X-1 and the mystery of irregular X-ray flares

Ultraluminous X-ray sources, or ULXs, are among the brightest objects in the universe. They consist of a compact object such as a black hole or neutron star pulling in material from a companion star in what astronomers call an accreting binary system.

These systems can exceed the so-called Eddington limit, the theoretical cap on how bright an object can shine based on its mass. In some cases, ULXs surpass this limit by more than 100 times, making them key targets for astrophysical research.

The specific source studied, ULX M74 X-1, lies in the spiral galaxy M74 and first drew attention in the mid-2000s when scientists detected rapid bursts of energy, known as flares. These flares showed a repeating pattern, but not at consistent intervals, creating a puzzle that remained unresolved for years.

To investigate, the RRI team led by researcher Aman Upadhyay used archival data from Chandra X-ray Observatory and XMM-Newton, covering two decades of observations.

PIB

Spectral clues reveal shifting perspectives

The team analyzed both flaring and non-flaring states of the source by studying its spectrum, which maps the intensity of radiation across energy levels.

During flares, the data showed a distinct feature around one kilo-electronvolt, a unit used to measure X-ray energy. This feature suggests the presence of strong winds blowing off the accretion disk due to intense radiation pressure.

In such scenarios, the structure of the system creates a funnel-like region around its axis. When observed through this funnel, the system appears at a low inclination angle. When viewed through the surrounding wind, it appears edge-on, or at a higher inclination angle.

However, the non-flaring data told a different story. High-energy photons dominated the spectrum, indicating a direct view of the inner, brightest region of the disk without interference from wind.

This contrast suggested that the observer’s line of sight was not fixed, but changing over time.

Wobbling accretion disk explains irregular bursts

To reconcile the conflicting observations, researchers proposed that the accretion disk itself is wobbling, similar to a spinning top.

As the disk tilts and shifts, the wind surrounding it moves in and out of the telescope’s line of sight. This leads to periodic changes in brightness, producing flares that repeat but not at regular intervals.

Co-author Prof. Vikram Rana said the wobble could explain why the same object appears differently depending on when it is observed, offering a unified explanation for both flaring and non-flaring states.

The mechanism provides a physical model for understanding irregular variability in ULXs, which has been a long-standing question in high-energy astrophysics.

Black hole or neutron star: the central debate

The nature of the compact object at the center of ULX M74 X-1 remains uncertain.

Earlier studies suggested the presence of an intermediate-mass black hole, based on lower temperature readings of the accretion disk. However, the RRI team applied updated spectral models that describe the disk as having multiple temperature zones.

Using this approach, they estimated the object’s mass to be about seven times that of the Sun, placing it in the category of stellar-mass black holes.

At the same time, the observed characteristics also resemble those of neutron star ULXs, leaving open the possibility that the object could be a neutron star instead.

Researchers say future work will focus on detecting pulsations, which would confirm the presence of a neutron star.

Expanding understanding of extreme cosmic systems

The findings contribute to a broader effort to understand how matter behaves under extreme gravitational and radiation conditions.

By linking irregular flaring patterns to geometric changes in the accretion disk, the study offers a framework that could be applied to other ULXs showing similar behavior.

The research, published in The Astrophysical Journal, highlights how long-term observational data can reveal subtle dynamics in distant cosmic systems that are otherwise impossible to detect directly.

For scientists studying the most energetic objects in the universe, the work adds a new piece to a complex puzzle that continues to evolve with each observation.

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Space Breakthrough: Astronomers confirm rogue planet candidate as a planet for the first time

Posted on March 27, 2026 by Arun Kumar N

An international team led by Peking University confirmed the mass of a rogue planet for the first time using a rare alignment of telescopes in May 2024. The object, detected through microlensing, was found to be about the mass of Saturn, confirming it as a true planet. The findings, published in Science in January 2026, relied on combined data from ground observatories and the Gaia spacecraft. Scientists say the discovery could reshape understanding of free-floating planets across the Milky Way.

In the vast dark between stars, planets drift unseen. For years, astronomers suspected they existed in large numbers, but proving what they were has been far more difficult.

That changed with a brief flicker of light in May 2024.

The signal lasted just two days. It came from a distant star whose brightness momentarily intensified as an unseen object passed in front of it. That phenomenon, known as microlensing, has long been one of the few ways to detect rogue planets.

This time, the data went further.

“For the first time, we have a direct measurement of a rogue planet candidate’s mass and not just a rough statistical estimate,” said Dong Subo, an astronomer at Peking University. “We know for sure it’s a planet.”

Microlensing technique confirms rogue planet mass for first time

Rogue planets, unlike Earth or Jupiter, do not orbit a star. They move independently through space, making them nearly impossible to detect with traditional methods that rely on starlight.

Microlensing offers a workaround. When a planet crosses the line of sight between Earth and a distant star, its gravity bends the star’s light, briefly amplifying it. The effect acts like a natural magnifying glass.

Astronomers have used this method for decades, but it comes with limitations. While it reveals that an object exists, it often cannot precisely determine its mass because distance and gravitational strength are intertwined in the signal.

That ambiguity has left many rogue planet candidates in a gray area.

The new study, published in Science, resolved that uncertainty for one object by combining observations from multiple telescopes across Earth and space. The event, catalogued as KMT-2024-BLG-0792 and OGLE-2024-BLG-0516, was first detected by the Korea Microlensing Telescope Network and the Optical Gravitational Lensing Experiment.

At the same time, the Gaia spacecraft, operated by the European Space Agency, recorded the same event from its position roughly 1.5 million kilometers from Earth.

That overlap proved critical.

Gaia parallax measurement unlocks distance and mass data

The key to the breakthrough lay in measuring what astronomers call the microlens parallax effect. This effect works similarly to human depth perception, where viewing an object from two different positions reveals its distance.

In this case, Gaia’s vantage point in space and Earth-based telescopes provided two perspectives of the same event. The microlensing signal appeared about two hours later from Gaia’s position than from Earth.

That time difference allowed researchers to separate the object’s distance from its gravitational influence, enabling a precise mass calculation.

“We are able to use the same principle to extract the distance information of this rogue planet candidate, finding the mass and distance separately,” Dong said.

The result placed the object at roughly one-fifth the mass of Jupiter, comparable to Saturn. That measurement confirmed it as a planet rather than a more massive object such as a brown dwarf.

Implications for rogue planet population in the Milky Way

The finding carries implications beyond a single object. Astronomers have long theorized that the Milky Way Galaxy may host vast numbers of rogue planets, potentially numbering in the billions or more.

“Our discovery offers further evidence that the Galaxy may be teeming with rogue planets that were likely ejected from their original homes,” Dong said.

These planets are thought to form within star systems before being expelled through gravitational interactions, especially during early stages of planetary formation. Passing stars may also disrupt systems, sending planets into interstellar space.

Some theories suggest that a subset of rogue planets could form independently, collapsing directly from gas clouds without ever orbiting a star.

The new measurement strengthens confidence in microlensing surveys that have hinted at such populations for years.

Future space telescopes to expand rogue planet discoveries

The study also highlights the importance of coordinated observations across multiple platforms. The overlap between Gaia, KMTNet, and OGLE marked the only time in Gaia’s operational lifetime that all three observed the same rogue planet candidate.

Future missions are expected to make such measurements more routine.

NASA plans to launch the Nancy Grace Roman Space Telescope, which will conduct large-scale microlensing surveys capable of detecting hundreds of rogue planets. China is also developing new missions, including the Chinese Space Station Survey Telescope and a proposed Earth 2.0 mission, both of which include microlensing in their scientific goals. [8]

These next-generation observatories will operate above Earth’s atmosphere, improving sensitivity and reducing distortions that affect ground-based observations.

“The new space-based facilities such as Roman, CSST, and Earth 2.0 are going to revolutionize the field of microlensing and the study of free-floating planets,” Dong said.

For now, the confirmed mass of a single rogue planet marks a turning point. It transforms a fleeting signal into a measurable world, offering a clearer view of a population that has long remained in the shadows.

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Thousands Of Pico-Satellites Could Redefine Direct Smartphone Connectivity From Space

Posted on March 25, 2026 by Arun Kumar N

A new approach to satellite communications could significantly reshape how smartphones connect to space, with researchers proposing the use of thousands of tiny satellites working in unison rather than relying on a single, complex spacecraft.

Scientists in Japan have demonstrated that swarms of pico-satellites—each carrying a small हिस्सा of a larger antenna system—can collectively function as a single, powerful phased-array antenna. The early-stage experiment showed that such a distributed system can deliver stable, high-quality data transmission, offering a potential pathway to cheaper and more resilient global connectivity.

The concept builds on the growing interest in direct-to-device (D2D) satellite communications, which aim to allow ordinary smartphones to connect directly to satellites without the need for ground infrastructure. The technology is particularly attractive for extending coverage to remote regions such as oceans, deserts, and disaster-hit areas where terrestrial networks are either weak or nonexistent.

Traditionally, achieving this requires large satellites equipped with sophisticated phased-array antennas. These systems rely on tightly coordinated antenna elements that can steer signals electronically. However, they are expensive to build and launch, and their centralized design creates a single point of failure—any major malfunction can render the entire satellite ineffective.

The Japanese research team, led by Associate Professor Atsushi Shirane, has proposed a fundamentally different architecture. Instead of concentrating antenna elements on one satellite, the system distributes them across thousands of pico-satellites flying in formation. These miniature units are synchronized wirelessly, eliminating the need for physical connections.

At the heart of the innovation is what the researchers describe as “spatial wireless combining and distributing technology.” In this setup, a central gateway satellite broadcasts a reference signal that allows all participating pico-satellites to remain precisely synchronized. This removes the need for energy-intensive components such as local oscillators on each unit, enabling further miniaturization and reducing power consumption.

The team developed a compact transceiver chip using standard silicon CMOS technology, making it suitable for large-scale, low-cost manufacturing. In laboratory simulations replicating satellite formations, the system demonstrated accurate beam steering and reliable data transmission using communication protocols similar to those found in modern smartphones.

Beyond lowering costs, the distributed nature of the system offers a major reliability advantage. Because the network is made up of numerous independent satellites, the failure of individual units does not compromise the entire system—unlike traditional monolithic satellites.

The findings suggest that formation-flying pico-satellites could become a viable foundation for next-generation satellite networks. If scaled successfully, the approach could expand global connectivity while reducing both financial and operational risks, bringing direct satellite communication closer to everyday mobile users.

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