The attacks of Sept. 11, 2001 were a national tragedy that resulted in a staggering loss of life and a significant change in American culture. Each year, we pause and remember. Beyond honoring the Americans who died that day, NASA also assisted FEMA in New York in the days afterward, and remembered the victims by providing flags flown aboard the Space Shuttle ...

Iranian-origin Harvard-studied maths wizard Maryam Mirzakhani died aged 40 after a long battle with breast cancer that had spread to her bones. She was the first recipient of the prestigious Fields Medal at a very young age. Mirzakhani won the Fields Medal in 2014 for her work on geometry and dynamical systems and was the first Iranian to win the ...