On galaxy color magnitude diagrams, a sequence of this color is found above the cloud and valley regions.
On galaxy color magnitude diagrams, a sequence of this color is found above the cloud and valley regions. Gas and dust particles between stars cause the extinction of electromagnetic radiation in a process named for this color. Stars of spectral class M are this color. Betelgeuse and Antares are supergiants of this color. It's not brown, but dwarves of this color are the most common type of star in the Milky Way. After leaving the main sequence, stars enter a branch named for this color before emitting a planetary nebula and becoming white dwarfs. For 10 points, name this color which also describes a kind of giant, luminous star the sun will eventually become. 
On galaxy color magnitude diagrams, a sequence of this color is found above the cloud and valley regions.
red