Across
- 3. Theory that the earth was center of Universe
- 5. A device used to make distant objects closer
- 6. A person who studies space
- 7. Everything in space as a whole
- 10. The study of space beyond our atmosphere
- 11. The path of an object around another object
Down
- 1. Theory the sun is the center of Universe
- 2. A hole in the surface of a planet or moon
- 4. When an object travels around another
- 6. An invisible line going through the Earth
- 8. A planets spin on its axis
- 9. Force that pulls objects towards the Earth