NASA is set to broadcast a live news conference on Monday, April 28, at 2 p.m. EDT, in which astronaut Don Pettit will ...

A planet 140 light-years away is disintegrating fast—losing a Mount Everest’s mass daily. Its 9-million-km rocky tail marks a ...

NASA’s oldest astronaut has returned to his home planet after spending the days leading up his 70th birthday off-world.