Space

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Across
  1. 6. how far light travels in a year
  2. 8. the tendency to do nothing
  3. 9. guardians of the ____
  4. 10. the planet we live on, breathable environment
  5. 13. a system of stars named after Greece
  6. 15. dounut shaped ice bodies
  7. 17. the things that orbit earth that send us data
  8. 19. ISS
  9. 22. the size of something
  10. 23. the galaxy we live in
Down
  1. 1. the thing that keeps our feet on the ground
  2. 2. what the earth does around the sun
  3. 3. the north star
  4. 4. what we live on
  5. 5. satellite that's been moving out since the 70's
  6. 7. space telescope
  7. 11. triple star system
  8. 12. A day in space
  9. 14. the H in H^2O
  10. 16. a group of stars in the sky
  11. 18. a thing in space that has so much gravity, light can't escape
  12. 20. a cloud of dust and particles
  13. 21. ball of gass and waves