Early Astronomy

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Across
  1. 4. The study of space beyond our atmosphere
  2. 5. The theory that the sun is the center of the solar system.
  3. 7. takes 1 year to complete a revolution around the sun.
  4. 8. AN imaginary line going through the center of a sphere north and south pole.
  5. 10. A force that pulls objects toward the center of the earth, other planets or moons.
  6. 12. Is a person who studies space
  7. 13. Everything in space as a whole
Down
  1. 1. A device used to make distant objects a appear much closer.
  2. 2. Theory that the earth was the center of the solar system
  3. 3. The path of an object around another object in space.
  4. 6. A hole in the surface of a planet or moon caused by a rock from space hitting the surface.
  5. 9. A planets spin on it’s axis.
  6. 11. When a object travels around another.