Hubble Space Telescope image showcasing the giant elliptical galaxy M60 (NGC 4649) and the ultra-compact dwarf galaxy M60-UCD1. M60 is one of the largest galaxies in the Virgo Cluster, while M60-UCD1 is one of the densest galaxies known, possibly harboring a supermassive black hole. The image highlights the contrast in size and density between these two celestial objects.

Astronomy Picture from 04/10/2013

The Densest Galaxy

Source: https://apod.nasa.gov/apod/ap131004.html


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