Space Crossword

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Across
  1. 4. Once was the 9th planet of the solar system
  2. 5. Unit of distance used in space
  3. 6. Cosmic snowballs of frozen gases, rock, and dust that orbit the Sun
  4. 8. The nearest star known to us
Down
  1. 1. The only planet with no Roman Title
  2. 2. God of Sky
  3. 3. region of spacetime where gravity is so strong that nothing can escape
  4. 7. The earths only natural satellite