Across
- 3. we live on it
- 5. the entire celestial cosmos.
- 7. has micro organisms
- 8. large ball of gas
- 9. hottest planet
- 11. the smallest planet
- 12. way the galaxy we live in.
Down
- 1. gas planet
- 2. many of these in the universe
- 4. the study of all physical object beyond earth.
- 5. rotates on its side
- 6. the biggest planet
- 8. has a ring
- 10. system 8 planets in our galaxy are called this.
- 12. natural satellite the revolves around larger bodies.