Galaxy Pair Arp 116 (annotated) | Hubble
This image shows Arp 116, which is composed of a giant elliptical galaxy known as Messier 60, and a much smaller spiral galaxy, NGC 4647. Also included in the image is an annotated pointer to their even smaller neighbor M60-UCD1.
Lying about 50 million light-years away, M60-UCD1 is a tiny galaxy with a diameter of 300 light-years—just 1/500th of the diameter of the Milky Way! Despite its size it is pretty crowded, containing some 140 million stars.
An international team of astronomers have found a supermassive black hole at the center of M60-UCD1 with the mass of 20 million Suns.
Credit: European Space Agency, NASA and the Hubble Heritage (STScI/AURA)
Release Date: September 6, 2012
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