OtterKnow Kids EncyclopediaAn astronaut is a person who travels into space! Astronauts explore, do science experiments, and learn about the universe. They are trained to live and work far from Earth for weeks or even months at a time.
Astronauts have done some really big things. They have walked on the Moon, lived on the International Space Station, and even fixed satellites floating in space. They work hard every day doing experiments, exercising, and keeping their spacecraft running smoothly.
- The word “astronaut” means “star sailor” in Greek.
- More than 600 people have traveled to space so far.
- Astronauts grow about two inches taller in space because gravity is not squishing their spine!
