What an Astronaut Really Does (It's Not What You Think)
An astronaut is a person trained to travel and work in space. Astronauts are typically employed by space agencies like NASA, ESA, or private
Alex Kovacs
Security & Technology Editor
March 19, 2025
Updated March 19, 2025 · 3 min read
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Frequently Asked Questions
What is an astronaut?
An astronaut is a professional space traveler who is trained to command, pilot, or serve as a crew member of a spacecraft. They perform scientific research and maintenance in space.
How do you become an astronaut?
To become an astronaut, you typically need a degree in a STEM field, relevant professional experience, and physical fitness. Candidates undergo rigorous training including simulations, survival skills, and spacecraft systems.
Who is the most famous astronaut?
Neil Armstrong is one of the most famous astronauts as the first person to walk on the Moon. Other famous astronauts include Buzz Aldrin, John Glenn, and Sally Ride.
How many astronauts are in space right now?
The number varies, but typically there are around 6-10 astronauts on the International Space Station at any given time. Crews rotate every few months.
What do astronauts do in space?
Astronauts conduct scientific experiments, maintain the space station, perform spacewalks, and communicate with ground control. They also exercise to prevent muscle loss and monitor their health.
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