And layers of the sun
The Radiative zone is not quite as hot as the sun's core but is still very hot. Resource for the picture is http://phys.org/news/2013-09-iron-sun-greenhouse-gas-x-ray.html.
The convective zone is the layer under the surface of the sun, though not as hot as the core or radiative zone it is still very hot. Resource for picture http://www.cora.nwra.com/~werne/eos/text/convection_zone.html.
The Photosphere which is considered the surface of the sun the photosphere is very hot but not as hot as the core. Resource https://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_solar/cub_solar_lesson02.xml.
The chromosphere is the layer above the photosphere and appears as a red glow around the sun the chromosphere is not very visible. Resource for picture http://blogs.jccc.edu/astronomy/tag/sun/.
The corona (which means crown) is the layer above the chromosphere and the outermost layer of gas of the sun can only be seen during a solar eclipse. Resource for picture http://www.redshift-live.com/en/magazine/articles/Astronomy/14971-The_Suns_atmosphere-1.html.
Sunspots are the dark spots that appear on the surface of the sun they are dark because they are cooler than the surrounding areas they seem to occur in a 11 year cycle. Resource for the picture http://www.weather.gov/fsd/sunspots.
Solar prominences are huge arches or loops of glowing gas that come from the sun's surface. Resource for picture http://www.nasa.gov/multimedia/imagegallery/image_feature_1650.html.
Solar flares are explosions on the sun and solar flares usually occur around sunspots. Resource for picture http://www.nasa.gov/mission_pages/sunearth/news/flare-impacts.html#.VmjS16Rq7SM.
Auroras occur because solar flares and coronal mass ejections disrupt Earth's magnetic field and causes Auroras. Resource for picture http://hypescience.com/espiralada-aurora-boreal-e-fotografada/.