Space Crossword

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Across
  1. 2. There are nine of these
  2. 5. Its white and always comes out at night
  3. 6. The largest planet
  4. 7. The only planet that a human can exist in
Down
  1. 1. We try to see the sky through it
  2. 3. They sparkle at night
  3. 4. It's very bright and yellow
  4. 5. The first planet