Early Astronomy

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Across
  1. 3. The theory that the Earth was the center of the universe.
  2. 5. A device that makes 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 in space.
Down
  1. 1. Theory that states the sun is the center of our universe.
  2. 2. A hole in the surface of 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 sphere's north and south poles.
  5. 8. A planets spin on its axis.
  6. 9. A force that pulls objects toward the center of the Earth, planets or moons.