M53 in Coma Berenices
Copyright: Adam Block/NOAO/AURA/NSF
M53 is a globular cluster of stars in the constellation of Coma Berenices shining at magnitude 8.5 from a distance of approximately 60,000 ly. Like all globular clusters it is extremely old, in the region of 15-16 billion years, and lurks in a halo around the galaxy. Virtually all the members of this cluster are old, red giant stars; star formation has all but ceased.