solar system

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Across
  1. 2. first astronomer to use the telescope
  2. 3. astronomer who challanged the geocentric theory
  3. 4. an object spinning around another object
  4. 7. the curve that a body in space takes in orbit
  5. 9. an invisible force that pulls a less massive object to a more massive object
Down
  1. 1. the correct theory that put the sun in the center of the solar system
  2. 5. the theory that Earth is the center of the solar system
  3. 6. system the sun and everything that revolves around it
  4. 8. a planet spinning on its axis