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  1. Astronaut - Wikipedia

    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 …

  2. Astronaut | Definition, Facts, & Training | Britannica

    Nov 28, 2025 · Astronaut, designation, derived from the Greek words for ‘star’ and ‘sailor,’ commonly applied in the West to an individual who has flown in outer space. As of 2022, 587 …

  3. Astronauts - NASA

    Nov 28, 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 …

  4. 15 Famous Astronauts Who Expanded Our Universe

    Apr 25, 2025 · Some brave explorers travel across oceans; others blast off into space. This list of famous astronauts celebrates the pioneers of space exploration — those who took "one giant …

  5. ASTRONAUT Definition & Meaning - Merriam-Webster

    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. Watch NASA astronaut, 2 cosmonauts launch to the International …

    Nov 26, 2025 · NASA's Chris Williams and two cosmonaut colleagues will launch to the International Space Station early on Thanksgiving Day (Nov. 27), and you can watch the …

  7. 13 Most Famous Astronauts - Have Fun With History

    Jan 9, 2024 · In this article, we delve into the lives and achievements of some of the most famous astronauts in history.

  8. NASA astronaut joins Russian cosmonauts for Thanksgiving Day …

    Nov 27, 2025 · American astronomer-turned-medical physicist and now NASA astronaut Chris Williams joined two Russian cosmonauts aboard a Soyuz ferry ship Thursday for a …

  9. Astronaut - New World Encyclopedia

    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.

  10. Astronaut - College of Science - Purdue University

    An astronaut is a person trained to pilot a spacecraft, travel in a spacecraft or work in space.