Astronomy

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Across
  1. 6. the amount of energy a star gives off per second
  2. 7. we are about to enter the beaver moon, this is the moon when summer break starts
  3. 9. protons and ______________ were the more stable particles formed after the big bang
  4. 11. when the earth is between the moon and sun
  5. 12. name for the moon growing
  6. 14. used to analyze the light given off by stars
  7. 15. hot stars have this colour
  8. 17. three galaxy shapes are spiral, irregular and ______
Down
  1. 1. how bright a star would be from 32.6 light years from earth is ___________ magnitude.
  2. 2. what astronomers believe started the universe 14 billions years ago
  3. 3. a neutron star that releases pulses of radiation
  4. 4. the name of our galaxy
  5. 5. second full moon in the same month
  6. 7. cluster, a collection of stars held together by gravity
  7. 8. cool stars have this colour
  8. 10. the term derived from moon since it is about the length of the moon cycle
  9. 13. when the moon is in between the earth and sun
  10. 16. name for moon shrinking
  11. 18. we place telescopes here in relation to our atmosphere