Science 9 - Space

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Across
  1. 2. Smaller than Planets but big enough for their gravity to make them round
  2. 3. Pieces of space debris
  3. 7. Known as natural satelites
  4. 9. Known as dirty snowbals
  5. 10. He proved gravity by making three laws
  6. 11. Leftover remains from the formation of the solar system
Down
  1. 1. The sun is at the center of the universe
  2. 4. Its gravity keeps planets orbiting around it
  3. 5. Space debris that reaches Earths surface
  4. 6. The earth is at the center of the universe
  5. 7. Known as shooting stars
  6. 8. The outer planets