Photosphere
Videos
The photosphere is a star's outer shell from which light is radiated. It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately 2⁄3, or equivale
Sun's surface in false color
Solar atmosphere: temperature and density. See here for meanings of extra lines in the graph.
Chromosphere
Videos
A chromosphere is the second layer of a star's atmosphere, located above the photosphere and below the solar transition region and corona. The term usually refers to the Sun's chromosphere, but not ex
The red color of the chromosphere could be seen during the solar eclipse of August 11, 1999.