Across
- 3. The theory that the Earth was the center of the universe.
- 5. A device that makes distant objects appear 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 of an object around another object in space.
Down
- 1. Theory that states the sun is the center of our universe.
- 2. A hole in the surface of a planet or moon caused by a rock from space hitting the surface.
- 4. When an object travels around another.
- 6. An imaginary line going through the sphere's north and south poles.
- 8. A planets spin on its axis.
- 9. A force that pulls objects toward the center of the Earth, planets or moons.