Star Puzzle

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Across
  1. 3. the milky way is a ___
  2. 6. opposite of a white hole
  3. 8. ethiopian princess in greek mythology
  4. 12. the earth ___ the sun
  5. 13. the third planet from the sun
  6. 14. cloud of dust and gas in space
  7. 16. the north star
  8. 17. an object that orbits a celestial body
  9. 18. you need 2 of these molecules to make water
  10. 19. shiny objects in the sky
  11. 20. how we measure in space
  12. 22. icy objects beyond the orbit of neptune
  13. 23. the ISS takes this much time to orbit earth once
Down
  1. 1. earth is in the galaxy ___
  2. 2. the earth is the 3rd ___ to the sun
  3. 4. closest star system
  4. 5. ISS
  5. 7. newtons first law is the law of ___
  6. 9. ___ space telescope
  7. 10. keeps us from floating
  8. 11. a group of stars that look like a picture
  9. 15. the most distant man made object in space
  10. 21. amount of matter in an object