Astronomy and space crossword fun.

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Across
  1. 3. A theory where Earth orbited the Sun.
  2. 5. A thing made to see far away objects.
  3. 6. A person who studies space.
  4. 7. The whole blank space.
  5. 10. Space studied beyond Earth.
  6. 11. Two space objects going around each other.
Down
  1. 1. A theory where the Sun is in the center.
  2. 2. A hole in the center of a planet.
  3. 4. When an object travels around another.
  4. 6. An imaginary line going through Earth.
  5. 8. A planets spin on its axis.
  6. 9. A force that pulls.