Astronomy

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Across
  1. 3. Theory that Earth was the center of Universe
  2. 5. A device used to make objects appear closer
  3. 6. A person who studies space
  4. 7. Everything in space as a whole
  5. 10. The study of space beyond our atmosphere
  6. 11. The path of an object around another object
Down
  1. 1. Theory that sun is the center of Universe
  2. 2. A hole in the surface of a planet or moon
  3. 4. When an object travels around another
  4. 6. An imaginary line going through center Earth
  5. 8. A planets spin on its axis
  6. 9. The force that pulls objects towards objects