astronomy

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