Second 6 Weeks CrossWord

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Across
  1. 3. 88 Day period
  2. 5. 29 years
  3. 8. solid object that survived the meteor phase in a gaseous atmosphere without being completely vaporized.
  4. 9. 24 hours
  5. 10. 687 Day period
Down
  1. 1. 225 day period
  2. 2. 12 years
  3. 4. 84 years
  4. 6. small rocky objects that orbit the Sun
  5. 7. the light and associated physical phenomena
  6. 8. large spiral system consisting of several hundred billion stars