Nate's star cross word

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Across
  1. 1. the sun of posiden
  2. 3. a gaint could of dust in space
  3. 4. it is a region in space where gravity is so intense that nothing, not even light, can escape
  4. 7. this is the plant we live on
  5. 10. residence to change in motion
  6. 16. a space based observatory that orbits earth
  7. 17. a space probe that is one the outside of the univers
  8. 18. a massive collection of stars, gas, dust, and dark matter held together by gravity
  9. 23. the north star
  10. 24. a satilight that people live in
  11. 25. a constilation
  12. 27. 9.8 meter per second sqared
  13. 28. a zodiac constellation representing a ram
Down
  1. 2. the big dipper is part of this
  2. 5. a prominent hero from Greek and Roman mythology
  3. 6. it take a satilight this amount of time to get around earth
  4. 8. a clean methane
  5. 9. Pluto orbits on this
  6. 11. something that orbits earth
  7. 12. are sun is one
  8. 13. the close star to plant earth
  9. 14. we live on one
  10. 15. the size and weight of an object
  11. 19. the water giver
  12. 20. you move at the speed of light for a yearlightyear
  13. 21. the big dipper is one
  14. 22. the glaxey we live in
  15. 26. an object revoling around somthing