Across
- 3. the theory that shows that the Earth was in the center of the solar system
- 5. a machine used to see things in far space
- 6. A person who studies space and beyond
- 7. everything in space as big and as a whole
- 10. The study of space
- 11. A object going around another in space
Down
- 1. The theory that claims the sun is in the center of the solar system
- 2. a hole in a surface caused
- 4. How a object circles around another
- 6. a imaginary line going through a planet
- 8. direction of which a planet spins on its axis
- 9. A force that pulls objects to a planet