science enrichment 6th grade vocab words

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Across
  1. 3. Theory that the earth was the center of the universe.
  2. 5. A device used to make distant objects appear closer.
  3. 6. someone who studies space
  4. 7. everything in space as a whole
  5. 10. study of space beyond our atmosphere
  6. 11. Path of an object around another object in space
Down
  1. 1. Theory that the sun is the center of the solar system
  2. 2. A hole in the surface of a planet or moon caused by a rock from space hitting the surface.
  3. 4. When an object travels around another object
  4. 6. An imaginary line going through the center of a sphere’s north and south pole
  5. 8. A planets spin on its axis
  6. 9. A force the pull objects towards the center of a celestial body