Astronomy Vocab.

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Across
  1. 3. Theory that states the sun is the center of the solar system.
  2. 4. The study of space beyond our atmosphere
  3. 6. A device used to make distant objects appear much closer
  4. 8. Theory that the Earth was the center of the universe
  5. 9. A hole in the surface of a planet or moon caused by a rock from space hitting the surface
  6. 11. When an object travels around another
Down
  1. 1. Everything in space as a whole
  2. 2. A person who studies space
  3. 5. A direction of which a planet spins on its axis
  4. 7. The path of an object around another object in space
  5. 8. A force that pulls objects towards the center of the Earth, other planets, or moons
  6. 10. An imaginary line going through the center of a spheres north and south poles