Ultra-Compact Dwarf Galaxies: Stars Packed Together In Early Universe A Million Times More Closely

Friday, February 13, 2009 - 09:29 in Astronomy & Space

In the early Universe, a newly-discovered type of galaxy, Ultra-Compact Dwarfs (UCDs) had stars packed together a million times more closely than anything we see today. Astronomers suggests that the remnants of these stars still make up most of the mass of UCDs in the present day.

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