Trained space explorers and pilots who travel in spacecraft beyond Earth's atmosphere, conducting research and missions in outer space.
From Greek 'astron' (star) and 'nautes' (sailor), literally 'star sailor.' The term was coined in the 1920s, though the first human spaceflight didn't occur until 1961 with Yuri Gagarin.
Astronauts experience something called 'overview effect'—a profound shift in perspective when viewing Earth from space, causing them to feel less attached to national borders and more aware of planetary fragility. Studies show this actually changes their behavior and values for years afterward, suggesting that perspective itself is transformative, not just emotionally but neurologically.
Term crystallized in 1960s during space race. Women were systematically excluded from astronaut programs until 1978 (Sally Ride, 1983), despite demonstrated qualifications; NASA used physical requirements coded to male bodies.
Use 'astronaut' inclusively; it applies equally. When citing history, acknowledge: 'early astronaut programs were limited to men, though women qualified.'
Women like Valentina Tereshkova (first in space, 1963, USSR), Kalpana Chawla, Mae Jemison, and countless engineers were critical to space programs and excluded from public recognition.
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