Across
- 3. The Theory that Earth was the center of the universe.
- 5. A device which makes objects seem much 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 around another object in space
Down
- 1. Theory that states the sun is the center of the universe.
- 2. A hole in the surface of a planet
- 4. when an object travels around another object.
- 6. A line going through the center of a sphere
- 8. a planets spin on its axis
- 9. a force that pulls objects to the ground.