Across
- 2. , The way a planet or moon goes around something
- 3. , The first planet of our solar system
- 7. , The 4th planet in our universe
- 8. , nonluminous material that can't be seen
- 9. , An extremely luminous and active galactic nucleus
- 12. , The closest galaxy to us
- 13. , A celestial object containing ice and dust in space
- 15. , everything in the universe
Down
- 1. , The biggest planet in our galaxy
- 4. , the shape stars make
- 5. , The star you can see when you look up north
- 6. , The only planet that is deemed livable
- 10. , The study of stars
- 11. , A cylinder shape object that can propel to a high distance
- 14. , The name of our universe