nova		layer of the sun's atmosphere
main sequence stars		layer of the sun's atmosphere above the photosphere
corona		very small, hot stars
supernova		outer layer of a massive star that is blown apart in a violent explosion
core		large, bright stars that are fairly cool
chromosphere		outer layer of the sun's atmosphere
white dwarfs		very large stars
red giants		center of the sun
supergiants		outer layer of a star blown off in an explosion
photosphere		stars that fall within a band in the middle of the H-R diagram