Vocab

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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 much 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 states the sun is the center of the solar system
  2. 2. a hole in the surface in a planet or moon caused by a rock from space hitting the surface
  3. 4. when an object travels around another
  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 that pulls objects towards the center of the earth, other planets or moons