Vocab Words

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Across
  1. 2. the force that pulls a smaller object towards a larger object
  2. 4. what something is made of
  3. 8. the four planets closest to the sun
  4. 9. celestial object that orbits around a planet
  5. 10. planets that are on the outside of the solarsystem
Down
  1. 1. the opposite of thin
  2. 3. again and again
  3. 5. moves around a planet
  4. 6. earth-like planets
  5. 7. the layer of gasses that surround a planet
  6. 11. the opposite of thick