Stars Galaxies Universe

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Across
  1. 1. graph plotting stars temp and magnitude
  2. 5. region so dense light can't escape
  3. 9. shape of our galaxy
  4. 10. accepted theory how universe formed
  5. 12. diagonal line on a hr diagram
  6. 14. surface of the sun
  7. 15. cloud of gas and dust
  8. 18. dark spots on the sun
Down
  1. 2. name of our galaxy
  2. 3. objects moving away from the earth
  3. 4. distance light travels in one year
  4. 6. used a telescope to study the sun
  5. 7. objects moving toward the earth
  6. 8. how bright the stars are
  7. 11. color of coolest stars
  8. 13. layer of sun most dense
  9. 16. color of hottest stars
  10. 17. process our sun uses to turn hydrogen into helium