space

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Across
  1. 2. magnitude star brightness from earth
  2. 4. diagrams graph of relationships between stars
  3. 6. the actual brightness of an object
  4. 8. magnitude measure of star brightness from standard distance
  5. 11. space and all the matter and energy in it.
  6. 12. stars,dust,and gas bound by gravity
Down
  1. 1. star explosion that throws out its outer layers
  2. 3. spectrum all frequencies or wavelengths of electromagnetic raiation
  3. 5. distance light travels in a year
  4. 7. a region where stars are born
  5. 9. dwarf hot dim star that used be a sun
  6. 10. star collapsed star that turns into neutrons