Astronomers

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Across
  1. 5. solar ...
  2. 6. a person who travels space
  3. 7. the fourth planet from the sun
  4. 8. the earth orbits it
  5. 9. third planet from the sun
Down
  1. 1. the moon goes through eight
  2. 2. the planet surrounded by rings
  3. 3. saturn, earth, and venus are...
  4. 4. it orbits the sun
  5. 5. the sun is a ?