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.