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 commander or crew member aboard a spacecraft.

This is an alphabetical list of astronauts, people selected to train for a human spaceflight program to command, pilot, or serve as a crew member of a spacecraft. For a list of everyone who has flown in space, see List of space travelers by name. …

The Astronaut Corps is based at the Lyndon B. Johnson Space Center in Houston, although members may be assigned to other locations based on mission requirements, e.g. Soyuz training at Star City, Russia.. The Chief of the Astronaut Office is the most senior leadership position for active astronauts in the Corps. The Chief Astronaut serves as head of the Corps and is the …

An astronaut or cosmonaut is a person who goes into outer space. The Soviet Union and countries that it controlled used the word cosmonaut. Western countries including the United States said astronaut.

All twelve people who have walked on the Moon are American men. To date, four of the twelve are still alive, including Apollo 11 astronaut Buzz Aldrin.

2024年12月25日 · 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 to those from the United States, Canada, …

2025年1月29日 · Today there are usually seven astronauts living on board at any given time, from a variety of countries. The first class of NASA astronauts was selected in 1959. They are known as the Mercury 7. Since inception, NASA has selected 360 astronaut candidates: 299 men, 61 women; 212 military, 138 civilians; 191 pilots, 159 non-pilots.

NASA assigned 32 American astronauts to the Apollo lunar landing program, and 24, flying on nine missions between December 1968 and December 1972, orbited the Moon. During six two-man landing missions twelve astronauts walked on the lunar surface, and six of those drove Lunar Roving Vehicles.

Astronaut, designation, derived from the Greek words for “star” and “sailor,” commonly applied to an individual who has flown in outer space. More specifically, astronauts are those persons from the United States, Canada, Europe, or Japan who travel into space.

List of astronauts or space travellers, may refer to: