"Celestial Conundrums"

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Across
  1. 3. I control the ocean tides
  2. 5. Betelgeues is about to do this
  3. 6. The Earth does this around the sun
  4. 7. I assist you in looking at stars and planets
  5. 8. Also known as a star nursery, made up of gaseous clouds
  6. 10. Earth is in the arm of the Andromeda
  7. 11. There are 12 of these signs in Astrology
  8. 12. Earth is considered one of these
  9. 14. Plants need me to survive
  10. 15. Also known as a "Shooting Star"
  11. 18. The study of planets, stars,and the Zodaic Signs
  12. 19. The sun and moon are considered this type of object
Down
  1. 1. People watch the sun do this with special glasses
  2. 2. The Moon's orbit around the Earth is called this
  3. 4. Set of familiar stars, they were used by explorers to navigate
  4. 5. There are millions of me in the night sky
  5. 9. Famous book title, "Secrets of the. "
  6. 13. Galileo Galilei is one of these
  7. 16. If I appeared in the night sky it was considered an omen
  8. 17. System Set of planets, and a sun, or suns