NASA's Suni Williams, who spent over 280 days stranded in space during Boeing Starliner's failed test flight, announced her retirement from the agency.

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NASA astronaut Suni Williams, who famously stayed in space for an extended nine-month visit after problems with an experimental capsule, has retired after 27 years, NASA said Tuesday

NASA's Suni Williams — one of two astronauts stuck for months at the International Space Station — has retired.

For the 1st time in the history of the International Space Station, an astronaut experienced a health issue that required NASA to end a mission early.

NASA observed its annual Day of Remembrance Thursday to commemorate the astronauts killed in the Apollo 1 and space shuttle Challenger and space shuttle Columbia accidents.

Four astronauts, including two from NASA, are set to leave the International Space Station on Wednesday, weeks earlier than planned, due to a medical issue.

An ailing astronaut is back on Earth. The crew of four returned Thursday, ending their space station mission more than a month early in NASA's first medical evacuation.

Astronaut Suni Williams left NASA late last month after 27 years of service. She spent a total of 608 days in space, more than all but one other American astronaut.

NASA astronaut Suni Williams has retired after a legendary 27-year career that included 608 days in space, nine spacewalks, and two stints commanding the International Space Station.

Families of the astronauts lost in the space shuttle Challenger accident are marking that tragic day 40 years ago