Space Puzzle

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Across
  1. 1. no longer a officially considered a planet
  2. 2. the force of attraction that pull objects toward each other
  3. 3. celestial body made of ice and dust
  4. 7. the farthest planet from the sun
  5. 8. known as the "Red Planet"
Down
  1. 1. large celestial body that revolve around stars
  2. 4. celestial body that revolves around a planet
  3. 5. the center of our solar system that other planets revolve around
  4. 6. a ball of gas that produces its own light and heat