space words

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Across
  1. 3. a tool to look far away
  2. 6. a person who goes into space
  3. 7. the smallest planer in the solar system
Down
  1. 1. it comes from another planet
  2. 2. the biggest planet in the solar system
  3. 4. the third planet from the sun
  4. 5. a big hole in the moon