Stars Review

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Across
  1. 2. our sun will die as a
  2. 4. apparent shift in position due to change in observers position
  3. 8. line you cannot return from
  4. 10. type of star where protons and electrons combine
Down
  1. 1. big cloud of gas and dust shed by a giant star
  2. 3. very stable type of star
  3. 5. Hubble's constant will allow you to determine the _____ of the universe
  4. 6. outermost layer of the sun
  5. 7. giant explosion of a star
  6. 9. nuclear reactions occur here