Across
- 2. a rapidly spinning neutron star that emits pulses of radio and optical energy.
- 3. a star that suddenly becomes brighter.
- 6. occurs when magnetic energy that has built up in the solar atmosphere is suddenly realeased.
- 9. a massive burst of solar wind and magnetic fields rising above the solar corona or being released into space.
- 14. a very large and bright star whose hot core has used most of its hydrogen.
- 16. the thin layer of the sun that is just abpve the photosphere and that glows a reddish color during eclipses
- 18. the location on the H-R diagram where most stars lie; diagonal pattern from lower right to upper left.
Down
- 1. a large celestial body that is composed of gas and that emits light.
- 2. cloud of gas that forms around a dying star.
- 4. The Suns center
- 5. the zone of the sun's interior that is between the core and the convective zone and in which energy moves by radiation.
- 7. the visible surface of the sun
- 8. an object so massive and dense that even light cannot escape its gravity.
- 9. the region of the sun's interior that is between the radiative xone and the photosphere and in which energy is carried upward by convection.
- 10. star a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons.
- 11. massive stars that become larger than giants as they leave the main sequence.
- 12. the outermost layer of the sun's atmosphere
- 13. a large cloud of gas and dust in interstellar space; a region.
- 15. a small, hot, dim star that is the leftover center of an old sunlike star.
- 17. star that explodes and blows itself apart.
- 19. cooler regions in the suns photosphere.