"Stars In the Night Sky"

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Across
  1. 2. stars very in (blank),temperature,and brightness
  2. 4. constellations may look different to (blank)
  3. 8. a combined group of stars that form a shape
  4. 13. 8 seconds to travel to earth
  5. 14. over (blank) of years people have seen the same constellations differently
  6. 15. stars appear as different colors because they produce (blank)of different sizes
  7. 16. a stars (Blank)temperature depends on the color
  8. 17. hottest stars
  9. 18. the sun is not the biggest star in the (galaxy)
  10. 19. coldest stars
Down
  1. 1. another part of a star is (blank)
  2. 3. the sun is the most (blank) star to us
  3. 5. constellations can tell us (blank)
  4. 6. 4.29 light years away
  5. 7. produces all our energy
  6. 9. form from clouds of dust and gas
  7. 10. constellations are (blank)by what people recognize
  8. 11. constellations can connect us with our (blank)
  9. 12. people say a star can (blank) and die
  10. 18. keeps stars from exploding