Across
- 1. An imaginary line crossing the center of a sphere's north and south pole.
- 3. A hole in the surface of a planet/moon caused by a rock from space.
- 5. The theory where the Earth was the center of the universe.
- 9. A planet's spin on an axis.
- 10. The study of space beyond our atmosphere.
- 11. A device used to make distant objects seem closer.
Down
- 1. Someone who studies space.
- 2. The theory where the sun is located in the middle of our solar system.
- 4. A full travel around one object by another.
- 6. Everything in space altogether.
- 7. The path of one object around another object in space.
- 8. A force that pulls objects toward planets, moons, etc.