Galaxy

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Across
  1. 6. hot ball of gas in space
  2. 7. A big explosion which created the Universe
  3. 10. person who travels in space
  4. 11. The largest planet in our solar system
  5. 12. closest star to us
  6. 13. The name of our galaxy
  7. 14. planet we live on
Down
  1. 1. Hottest planet in our solar system
  2. 2. The path which planets in our solar system take around the Sun
  3. 3. A small rock from space that hits Earth's surface
  4. 4. force that keeps us on the ground
  5. 5. planet farthest from the sun
  6. 8. planet known as the Red Planet
  7. 9. planet known for its rings