New York: Astronomers have found two ultra-compact dwarf galaxies with supermassive black holes that take up a high percentage of the compact galaxies' total mass.

The findings, published in the Astrophysical Journal, suggest that dwarfs may be remnants of massive galaxies that were ripped apart by larger galaxies and that black holes lurk at the centre of most of these objects, potentially doubling the number of supermassive black holes known in the universe.