Across
- 3. A theory that theearth was the center of universe
- 5. A device used to make distant objects look closer
- 6. a person who studies space.
- 7. Everything in space as a whole.
- 10. Study of space beyond our atmosphere
- 11. the path of an object moving around another.
Down
- 1. Theory that the sun is the center of solar system
- 2. a hole in the surface of a planet caused by rock.
- 4. When an object travels around another.
- 6. An imaginary line going through a sphere.
- 8. A planets spin on its axis.
- 9. Force that pulls things.