Hubble and Chandra Find Evidence for Densest Galaxy in Nearby Universe

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Astronomers may have found the densest galaxy in the nearby universe.
The galaxy, known as M60-UCD1, is located near a massive elliptical
galaxy NGC 4649, also called M60, about 54 million light-years from
Earth. This composite image shows M60 and the region around it, where
data from NASA’s Chandra X-ray Observatory are pink and data from
NASA’s Hubble Space Telescope are red, green, and blue. The Chandra
image shows hot gas and double stars containing black holes and
neutron stars, and the Hubble image reveals stars in M60 and
neighboring galaxies including M60-UCD1. The arrow points to M60-UCD1.

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