Night Sky

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Across
  1. 2. appears to be growing
  2. 3. big and round moon
  3. 5. star you see in the day
  4. 7. no moon
  5. 8. thin sliver
Down
  1. 1. improved by Galileo
  2. 2. moon is getting smaller
  3. 4. one lunar cycle
  4. 6. earth's satellite