Across
- 2. theory that states the sun in the solar system
- 4. theory that the Earth was the center of the Universe
- 5. A human who studies space
- 8. a device used to make distant objects appear much close
- 9. when a planet spins
- 11. when an object travels around another object
Down
- 1. a hole in the surface of a planet or moon caused by a rock from space hitting the surface
- 3. everything in space as a whole
- 4. A force that pulls objects towards the Earth
- 6. the moon circles around Earth
- 7. the study of space beyond our atmosphere
- 10. an imaginary line