Across
- 5. the fourth state of matter
- 8. what Saturn's rings are made of
- 11. unidentified flying object
- 12. what keeps astronauts alive inside a spaceship or spacestation
- 14. a piece of rock that has landed on the earth
- 17. he's the cutest thing in space
- 19. extraterrestrial life
- 20. the force of two objects pulling on each other
- 21. the estimated length of space
Down
- 1. a theoretical substance that is said to be everywhere
- 2. created when a star dies and becomes infinitely dense
- 3. an asteroid belt beyond Neptune
- 4. the distance light travels in a year
- 5. this object is not a planet but many people believe it should be
- 6. particles that make up everything
- 7. what it's called when a star explodes
- 9. first man on the moon
- 10. the first moon program
- 13. the coolest space movie around! may the force be with you
- 15. where we live (you should know)
- 16. a planet outside of our solar system
- 18. the second moon program
- 20. Milky Way, Pegasus, and Black Eye to name a few