Across
- 3. what's left of something that is destroyed
- 5. a boundless three dimensional extent where astronauts usually go
- 7. a person trained to travel and work in space
- 9. system of millions and billions of stars
- 11. when you prepare for something your gonna do
- 12. body of rock and metal that is usually in space
- 16. someone who undertakes a long journey by sea or space
- 18. a form of transportation relating to space
- 20. the cosmos
Down
- 1. related to armed forces
- 2. a large body of water that's part of the hydrosphere
- 4. the thing we need to breath
- 6. a celestial body that revolves around the Sun
- 8. has to do with engineering and technology
- 10. curving or spinning around something
- 13. the thing astronauts use to get to space
- 14. a rock body that orbits Earth
- 15. the planet we live on
- 17. little pieces of light in the sky
- 19. to set or begin