SPACE CROSSWORD

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Across
  1. 3. right side of the moon appears brighter
  2. 6. small rocky objects that move around the sun
  3. 7. an natural force that pulls objects towards earth
  4. 8. 7th planet from the sun
Down
  1. 1. the path in space that is followed by an object going around a planet
  2. 2. a group of stars that appear in a particular shape or pattern
  3. 4. layer of gases that surround the earth
  4. 5. closest planet to earth