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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

    5 days ago · 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 …

  3. Astronauts - NASA

    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 …

  4. 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.

  5. 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.

  6. Astronauts | Encyclopedia.com

    May 23, 2018 · An astronaut is a person trained to perform a specific task on a craft designed and intended to travel beyond Earth 's atmosphere. The term "astronaut" derives from the Greek …

  7. NASA astronaut comes home after circling Earth 3,920 times

    Dec 10, 2025 · NASA astronaut Jonny Kim is seen outside the Soyuz MS-27 spacecraft, with a gifted Matryoshka Doll, after he landed with Roscosmos cosmonauts Sergey Ryzhikov, and …

  8. Jared Isaacman is confirmed as NASA chief, a year later : NPR

    4 days ago · "Jared's passion for Space, astronaut experience, unlocking the mysteries of the universe, and advancing the new Space economy, make him ideally suited to lead NASA into …

  9. Astronaut Fact Book - NASA

    As of November 2024, there are 47 active astronauts, 12 management astronauts, and 332 former astronauts or payload specialists, including those who have left NASA, and those who …

  10. NASA Astronaut Corps - Wikipedia

    The NASA Astronaut Corps is a unit of the United States National Aeronautics and Space Administration (NASA) that selects, trains, and provides astronauts as crew members for U.S. …