DAMIAN PEACH / SCIENCE PHOTO LIBRARY DAMIAN PEACH / SCIENCE PHOTO LIBRARY
Globular cluster NGC 2808. Globular clusters are spherical groups of very old stars that are tightly bound by gravity and orbit a dense central core. They can contain over a million stars within a volume only a few hundred light years across. They formed billions of years ago, and are distributed in halos around many galaxies, including the Milky Way. NGC 2808 has a mass of 1,420,000 solar masses. It is around 31,300 light years from Earth, in the constellation of Carina. This image was obtained on 5 December 2015.
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