Astronauts
⭐ MasteredAstronauts train for years to live and work in space. They wear spacesuits for spacewalks, exercise daily and float because they're in free fall around Earth.
Astronauts grow slightly taller in space.
All about Astronauts
Astronauts are people trained to travel and work in space. They train for years in classrooms, simulators and water tanks to prepare for spacewalks, experiments and emergencies. Training covers science, engineering, teamwork and physical fitness.
In space, astronauts float because they are in free fall as they orbit Earth. They wear spacesuits for spacewalks, exercise every day to keep their muscles and bones strong and conduct experiments that help us understand the human body and new technologies.
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Real-life uses of Astronauts
- Carrying out experiments on the International Space Station
- Repairing satellites and telescopes in orbit
- Testing technologies for future missions to the Moon and Mars
Frequently asked questions about Astronauts
What is the youngest person to go to space?
Many young people have flown on missions, and the youngest astronauts have been in their twenties.
How do astronauts go to the toilet in space?
Space toilets use airflow and suction to collect waste, since gravity does not work in the same way.
Do astronauts grow taller in space?
Yes. Without gravity pressing on the spine, astronauts can grow a few centimetres taller while in orbit.