Across
- 4. Scientists discovered pluto is made up of rock and ___
- 5. Pluto is considered one of these
- 7. to burst with alot of energy
- 10. a thing that can be seen and touched but is not alive
- 11. uncertainty about truth or facts
- 12. planet farthest away from the sun
Down
- 1. to find out
- 2. number of visible planets without telescopes
- 3. a border or line where something ends or begins
- 5. Abbreviation for Kuiper Belt Object
- 6. the same for both
- 8. the path which an object in space moves around a planet/star
- 9. number of planets
- 13. third planet from the sun
- 14. to become aware of