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 …

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 …

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 …

5 days ago · NASA has announced the early return of Crew-11 from the International Space Station after an unidentified astronaut experienced a medical problem.

3 days ago · ISS astronaut medical evacuation latest news: Crew-11 astronauts prepare for SpaceX Dragon departure Tuesday, Jan. 13, 2026: Updates on NASA's astronaut medical …

The meaning of ASTRONAUT is a person whose profession is to travel beyond the earth's atmosphere; broadly : any person who travels beyond the earth's atmosphere.

6 days ago · A group of astronauts will return from the International Space Station more than a month ahead of schedule after an unnamed crew member experienced a medical issue.

5 hours ago · In an unprecedented move, NASA is bringing an astronaut crew home early from the International Space Station because one astronaut has an undisclosed medical condition.

Sep 22, 2025 · An astronaut from Illinois was introduced as one of 10 candidates selected by NASA for potential future space missions. Find out about the new class.

NASA applies the term astronaut to any crew member aboard NASA spacecraft bound for Earth orbit or beyond. NASA also uses the term as a title for those selected to join its Astronaut Corps.