Outer Space

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Across
  1. 3. the envelope of gases surrounding a planet
  2. 5. the farthest planet from the sun
  3. 6. our galaxy
  4. 8. orbits the earth
Down
  1. 1. the closest thing to a planet but isn't ex:pluto
  2. 2. the closest planet to the sun
  3. 4. giant star in our solar system
  4. 7. a rock that is not a comet nor a planet