Cosmology Test Review

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Across
  1. 5. substance possible because of Earth's position in space
  2. 7. known as red planet
  3. 9. converting hydrogen to helium
  4. 10. natural satellite of Earth
  5. 16. eclipse is Sun-Moon-Earth
  6. 18. is different on different planets
  7. 19. north pole is in total daylight (date)
  8. 20. when Earth travels through the remains of a ______ you will see spectacular meteor showers
  9. 22. galaxy organized with arm like sections in oval
  10. 23. of Earth causes day and night
  11. 24. diagram that shows star lifecycle
  12. 25. main element in star
  13. 27. most dense layer of sun
  14. 28. distance light travels in one year
  15. 29. eclipse is Sun-Earth-Moon
  16. 30. light-year measures
  17. 33. study of how universe formed
  18. 35. measures distance from Earth
  19. 36. moon with no visible light
  20. 37. north star is stationary on horizon
Down
  1. 1. first stage in star lifecycle
  2. 2. earth's twin planet
  3. 3. spins on its side
  4. 4. tide when high is higher during new and full moon
  5. 6. Universe Model that said Earth was the center of the Universe
  6. 8. planets with rocky surfaces
  7. 11. gas that makes life possible on Earth
  8. 12. solar wind causes the tail of this space object to point away
  9. 13. nothing can escape this location in space
  10. 14. move from wind on mars
  11. 15. light increasing each night on moon
  12. 17. spiral shaped galaxy, ours!
  13. 21. third rock from the Sun
  14. 26. twelve hours light twelve hours darkness
  15. 30. effect of waves coming and going away from you
  16. 31. first manned mission to moon
  17. 32. are moving away from each other
  18. 34. explosion of massive star