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 to serve as a …
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 individuals from …
Astronauts - NASA
5 days ago · 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.
NASA astronaut back on Earth after 8 months on space station
2 days ago · NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their Soyuz spacecraft landing in the frozen steppes of …
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.
Meet Four Women Astronauts From Across NASA’s History
Dec 4, 2025 · A new book explores the experiences of all 61 U.S. women astronauts Valerie Neal NASA astronaut and Expedition 64 Flight Engineer Kate Rubins sequences DNA aboard the International …
Watch 3 astronauts land on Earth aboard Russian spacecraft early Dec. 9
5 days ago · NASA astronaut Jonny Kim (left) and cosmonauts Sergey Ryzhikov and Alexey Zubritsky pose in front of their Soyuz spacecraft before their April 2025 launch to the International Space Station.
Active Astronauts - NASA
Nov 25, 2025 · Alan B. Shepard, Jr. was the first American in space. Neil Armstrong was the first man to walk on the moon. John H. Glenn, Jr. was the first American to Orbit the Earth. Sally K. Ride was the …
Complete List of Astronauts | NASA & Global Space Explorers
Discover a definitive list of astronauts from NASA, ESA, Roscosmos, and more. Explore bios, mission details, and careers of global space explorers, past and present. Your ultimate resource for astronaut …
Astronaut - Training, Spacecraft, Preparation | Britannica
Nov 28, 2025 · What does it take to become an astronaut? Erik Gregersen, astronomy and space exploration editor at Encyclopædia Britannica, explaining how to become an astronaut and what …