Learn Everything About Astronomy & Astronauts Check out our free astronomy glossaries or check out our blog on astronauts and space. Check Our Free Glossaries! Astronomy & Space Science Glossaries Astrobiology Glossary Astrochemistry Glossary Astronomical History & Mythology Glossary Astronomical Objects Glossary Astronomical Phenomena Glossary Astronomical Units & Measurements Glossary Astrophysics Glossary Cosmology Glossary Planetary Science Glossary Rocketry & Propulsion Glossary Space Exploration Glossary Space Weather Glossary Telescopes & Observatories Glossary Recent Blog Posts How Do Astronauts Get Back to Earth Why Are Astronauts Weightless in the Space Station Why Do Astronauts Float in Space How Do Astronauts Use the Bathroom in Space How Long Does It Take to Become an Astronaut How Do Astronauts Sleep How Do Astronauts Shower How Many Astronauts Have Died in Space How Many Astronauts Have Walked on the Moon How Much Do Astronauts Get Paid How to Become an Astronaut How Do Astronauts Poop What Do Astronauts Do How Many Astronauts Are There Beyond Earth: The Courageous Journey of Astronauts Previous 12345 Next