Across
- 5. The element that outer planets have in their atmosphere, but not much
- 8. What are the inner planets also known as
- 10. What our sun is
- 11. when an object goes around another object in space
- 13. A Meteoroid that entered Earth's atmosphere
- 14. Gas, Dust, and ice that moves in an oval shaped obit
- 15. What hydrogen turns to in the gas giants because of the high pressure
Down
- 1. What Uranus has as a core
- 2. A meteoroid that strikes a moon or planet
- 3. Was a planet, then classified as a dwarf planet
- 4. what most of the outer planets' atmospheres are is mainly made of
- 6. a small, solid, rocky, or metallic body orbiting the Sun
- 7. The second planet from the sun
- 9. Rocks in space usualy not spherical
- 12. The planet closest to the sun