Unit 3 Vocabulary 10/14/16

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Across
  1. 2. the distance light travels in a year
  2. 5. a collection of stars dust, planets, etc.
  3. 8. Frequencys and wavelengths
  4. 9. a star that has collapsed under gravity
  5. 10. an old white center of a star that died
  6. 11. space and all the matter and energy in it
  7. 12. a large cloud of gas and dust where stars are born
Down
  1. 1. diagram that shows stars brightness and intensity
  2. 3. brightness of a star as if it were seen from a regular distance
  3. 4. the brightness of a star seen from earth
  4. 6. actual brightness of a star
  5. 7. a big explosion in which a massive star explodes and spreads its contents into space