On 1984, NASA astronaut Bruce McCandless became the first person to go on a spacewalk without a tether. McCandless was ...

NASA halted a planned spacewalk at the International Space Station because of what it described as a “medical concern” involving one of the astronauts, a reminder that even routine work in orbit can ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA and SpaceX plan to undock the Crew-11 mission from the International Space Station no earlier than 5 p.m. EST Wednesday, ...

NASA astronauts Reid Wiseman, Christina Koch and Victor Glover and Canadian astronaut Jeremy Hansen could launch on a trip around the moon as early as Feb. 8, traveling farther from Earth than ...

NASA's decision to bring Crew-11 home early marks the first medical evacuation from the International Space Station.

NASA astronaut Suni Williams has retired. Williams, along with the now-retired Butch Wilmore, rode on the Boeing Starliner to the space station.

An ailing astronaut returned to Earth with three others on Thursday, ending their space station mission more than a month early in NASA’s first medical evacuation. “It’s so good to be home,” said NASA ...

NASA astronaut Suni Williams has retired after 27 years of service and a career defined by endurance, leadership, and firsts in space. She spent 608 days in orbit, completed nine spacewalks, and twice ...

Training is underway for NASA’s newest class of astronaut candidates at the Johnson Space Center in Texas. The nearly ...