An astronaut (from the Ancient Greek ἄστρον (astron), meaning 'star', and ναύτης (nautes), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a …

Dec 17, 2025 · astronaut, designation, derived from the Greek words for “star” and “sailor,” commonly applied to an individual who has flown in outer space. More specifically, in the West, astronaut refers …

Dec 8, 2025 · The term “astronaut” derives from the Greek words meaning “star sailor,” and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond.

3 days ago · After canceling a spacewalk planned for Thursday, the space agency’s administrator said it was erring on the side of caution and bringing a crew of four home in the coming days.

2 days ago · ISS astronaut medical evacuation latest news: New commander to take charge soon Sunday, Jan. 11, 2026: Updates on NASA's astronaut medical evacuation from the International …

3 days ago · NASA announced it's ending a mission to the International Space Station early because of a medical situation involving one of the astronauts aboard the station.

3 days ago · The astronaut's "medical incident was sufficient enough," he said, that NASA decided to bring Crew-11 back early due to "lingering risk." The Crew-11 astronauts' return was planned for …