the sun and stars

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Across
  1. 1. star A star that has collapsed under gravity and whose protons and electrons have smashed together to form neutrons
  2. 3. hole An object so massive and dense that light can't even escape its gravity
  3. 4. A rapidly spinning neutron star that emits pulses of radio and optical energy
  4. 6. zone Outermost interior layer of the sun; moves heat using hot gases
  5. 7. zone Layer of sun that transfers heat by radiation
  6. 11. Outermost layer of the sun
  7. 13. flare A jet of gas from the chromosphere lasting a few minutes
  8. 14. Visible layer of the sun; gives off visible light
  9. 17. A star that explodes and violently blows itself apart
  10. 18. nebulae Core heated outer gases of a dying star
  11. 19. dwarf Hot dense core of matter left by a planetary nebulae
Down
  1. 1. A cloud of gas and dust
  2. 2. Explosions caused by pressure on a white dwarf that emits matter and energy
  3. 5. giant Cooler very bright very large red stars
  4. 6. Sun layer that is reddish during eclipses
  5. 8. Center of sun where fusion takes place
  6. 9. Ball of very hot gas that emits light
  7. 10. Very large very luminous massive star
  8. 12. mass ejection burst of magnetism and solar wind from the corona
  9. 15. sequence The diagonal band across a hr diagram
  10. 16. Colder dark regions of the sun