Vocabulary words

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Across
  1. 2. imaginary line going through the center of the spheres of north and south pole.
  2. 5. an object that crashed into the earth of moon.
  3. 7. is the theory that the sun was the center of our solar system.
  4. 8. when an object goes one another.
  5. 12. Person how studies space.
Down
  1. 1. the study of space beyond our atmosphere.
  2. 3. is a force that pulls objects to the ground.
  3. 4. the theory that the earth was in the center of the universe.
  4. 6. device that can see distance objects to appear closer.
  5. 9. path of an object going around another in space
  6. 10. everything is space has a whole.
  7. 11. a planet spinning on its axis.