Astronomy Vocab!

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Across
  1. 1. An imaginary line crossing the center of a sphere's north and south pole.
  2. 3. A hole in the surface of a planet/moon caused by a rock from space.
  3. 5. The theory where the Earth was the center of the universe.
  4. 9. A planet's spin on an axis.
  5. 10. The study of space beyond our atmosphere.
  6. 11. A device used to make distant objects seem closer.
Down
  1. 1. Someone who studies space.
  2. 2. The theory where the sun is located in the middle of our solar system.
  3. 4. A full travel around one object by another.
  4. 6. Everything in space altogether.
  5. 7. The path of one object around another object in space.
  6. 8. A force that pulls objects toward planets, moons, etc.