STARS

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Across
  1. 3. gas that flows outward from the corona composed of ions (2wds)
  2. 6. violent eruptions of particles and radiation from the sun (2wds)
  3. 8. gravity and ___________ balance itself in a star
  4. 9. how bright a star appears (2wds)
  5. 11. massive explosion of a star
  6. 12. sun spots are caused by ____________ __________ (2wds)
  7. 14. outermost layer of the sun's atmosphere
  8. 15. another name for Ursa Major (2wds)
  9. 17. hot condensed oject at the center of a nebula that will become a new star when nuclear reaction begins
  10. 18. groups of stars shaped like mythological characters
  11. 20. the energy output from the surface of a star per second
  12. 21. an extremely dense object that's gravity is so immense, light can not escape (2wds)
  13. 22. exactly or sharply defined or stated
Down
  1. 1. ___________ and pressure balance itself in a star
  2. 2. diagonal region of stars, where most stars are located (2wds)
  3. 4. a cloud of interstellar dust and gas
  4. 5. splitting of heavy atomic nuclei into smaller nuclei
  5. 7. combination of lightweight atomic nuclei
  6. 8. apparent shift in position caused by motion of the observer
  7. 9. how bright a star would appear if it were at of distance of 10pc (2wds)
  8. 10. a subtle wavelength shift
  9. 13. dark spots on the surface of the sun
  10. 16. visible surface of the sun
  11. 17. an arc of gas that is ejected from the chromosphere
  12. 19. visible light arranged according to wavelengths
  13. 21. two stars that are gravationally attached to each other
  14. 22. 3.26 light years