Across
- 3. Theory that states the sun is the center of the solar system.
- 4. The study of space beyond our atmosphere
- 6. A device used to make distant objects appear much closer
- 8. Theory that the Earth was the center of the universe
- 9. A hole in the surface of a planet or moon caused by a rock from space hitting the surface
- 11. When an object travels around another
Down
- 1. Everything in space as a whole
- 2. A person who studies space
- 5. A direction of which a planet spins on its axis
- 7. The path of an object around another object in space
- 8. A force that pulls objects towards the center of the Earth, other planets, or moons
- 10. An imaginary line going through the center of a spheres north and south poles