Across
- 4. is like a dirty snowball
- 6. It is in space to get data
- 8. When a space rock hits the earth's atmosphere
- 10. Pluto is this
Down
- 1. sun is in the center
- 2. known as minor planets
- 3. partially shaded outer region
- 5. a rock that is in space
- 7. oval shaped
- 9. takes a year to go around sun