Across
- 2. most planets have one or more of these as orbiting companions
- 4. the planet closest to the sun
- 5. A theory where earth is at the center rather than the sun
- 7. the ninth planet
- 9. "shooting stars"
- 10. Big enough for gravity to make it round but generally smaller than a planet
Down
- 1. small leftover bodies that orbit the sun in between mars and jupiter
- 3. the first form before becoming a meteor
- 6. Another name for inner planets
- 8. dusty/rocky chunks that melt when they see the sunlight
