Astronomy Vocabulary Crossword

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Across
  1. 2. a device used to make distant objects appear much closer
  2. 4. a planet's spin on its axis
  3. 8. the theory that states the sun is the center of the solar system
  4. 10. the theory that Earth was the center of the universe
  5. 11. a force that pulls objects towards Earth, other planets and moons
  6. 12. the study of space beyond our atmosphere
Down
  1. 1. a person who studies space
  2. 3. everything in space as a whole
  3. 5. an imaginary line going through a sphere's north and south poles
  4. 6. the path of an object around another object in space
  5. 7. a hole in the surface of a planet or moon caused by a rock from space hitting the surface
  6. 9. when an object travels around another