Across
- 3. Theory that the sun is the center of the solar system.
- 4. the study of space beyond our atmosphere
- 6. a device used to make distance objects appear much closer
- 8. Theory that the earth was the center of the universe
- 9. A hole in a surface in a planet or the moon caused by a rock formed in space hitting the surface.
- 11. when an object travels around another
Down
- 1. everything in space as a whole
- 2. a person who studies space.
- 5. a planet's spin on its axis
- 7. the path of an object around another object in space
- 8. a force that pulls objects to the center of the earth,and other planet or moons
- 10. an imaginary line going through a sphere's north and south poles