solar system crossword puzzle

1234567891011121314
Across
  1. 2. large natural object that orbits, or travels around, Earth
  2. 5. the only planet that spins on its side.
  3. 6. basic building block for all matter in the universe.
  4. 8. it's getting gradually smaller.
  5. 10. place in space where gravity pulls so much that even light cannot get out.
  6. 11. how fast light can travel in one year
  7. 13. the hottest planet in our solar system.
  8. 14. one object in space, like a planet or moon, passes through the shadow of another object in space.
Down
  1. 1. an object that moves around a larger object.
  2. 3. substance that is in a gaseous, or vaporous, state of matter.
  3. 4. are the largest objects in the solar system after the Sun
  4. 7. consists of the Sun and everything that orbits, or travels around, the Sun.
  5. 9. invisible force that pulls objects toward each other.
  6. 12. vast, unknown cosmos is brought into order, the earth having its proper place in the center.