Space Crossword

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Across
  1. 2. The name of the star closest to the Earth
  2. 4. Negative particle in an atom
  3. 7. Name of the galaxy that Earth is in
  4. 8. Name of the rocky planet that we live on
  5. 9. An icy rock moving through space with a long "tail"
  6. 11. Force that pulls objects
Down
  1. 1. Cloud of gas and dust that makes stars
  2. 2. A large ball of gas
  3. 3. Collection of stars, planets, nebulas
  4. 5. To go around or revolve around
  5. 6. So powerful that not even light can escape its gravity
  6. 10. Creates the seasons on Earth