Stars & Galaxies

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Across
  1. 6. distance light travels in a year
  2. 7. very luminous object that produces energy at a high rate
  3. 8. (magnitude) brightness of a star 32.6 LY from earth
  4. 10. study of evolution of universe
  5. 11. change in frequency when source/observer is moving
  6. 12. (magnitude) brightness of a star as seen from earth
  7. 15. cloud of dust & gas, where stars are born.
  8. 17. where most stars are found on H-R diagram
  9. 18. apparent shift in position of object when viewed from different locations
  10. 19. star that suddenly becomes brighter
Down
  1. 1. star that collapsed under gravity, forms neutrons.
  2. 2. very large and bright star has a hot core, used up most of its hydrogen
  3. 3. body composed of gas that emits light
  4. 4. object so massive that light can't even escape its gravity
  5. 5. group of stars organized into a recognizable pattern
  6. 9. theory that supports the formation of the universe
  7. 13. rapidly spinning neutron star emits radio & optical energy
  8. 14. small hot dim star, leftover center of an old sunlike star
  9. 16. collection of stars, dust, a& gas bound by gravity