A Hubble Space Telescope color image of the core of the globular star cluster Omega Centauri is used to construct a Hertzsprung-Russell diagram of the stellar populations in the cluster. When stars are sorted by brightness and color they can be used to create a graph that astronomers use to trace stellar evolution.
"Making a Color-Magnitude Diagram for Globular Cluster Omega Centauri"
– Microsoft PowerPoint presentation by J. Anderson
Publication: October 26, 2010