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Old Stars
Featured on November 19, 2018
A few of the stars of NGC 6791, one of the oldest star clusters in the galaxy, shine brightly in this Hubble Space Telescope image. The cluster is about 13,000 light-years away, and contains hundreds of stars. Most clusters are ripped apart after a few hundred million years of orbiting through the galaxy, but NGC 6791 has held together for eight billion years. [NASA/ESA/L. Bedin (STScI)]
