Across
- 2. The thing that started the universe (2 words)
- 4. The dwarf planet closest to the sun
- 6. Used to be a planet when adults were in school but was voted out of the Solar System
- 8. the biggest moon of Jupiter; also bigger than mercury
- 10. Big, burning balls of fire in space
Down
- 1. The group of asteroids between mars and Jupiter
- 3. The force that pulls smaller things to larger things
- 5. ______ belt (the group of asteroids beyond Neptune)
- 7. The only planet not named after a greek god
- 9. If Jupiter had just a little more ____, it would become a star.