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Across
  1. 2. the mirror
  2. 7. an earth day
  3. 8. mass per unit volume
  4. 9. growing
Down
  1. 1. an earth year
  2. 3. light bending
  3. 4. explosion
  4. 5. shrinking
  5. 6. the amount of matter in something
  6. 10. giants planets without solid surface