18 agosto 2014
Astronomers have accurately measured — and thus confirmed the existence of — a rare intermediate-mass black hole about 400 times the mass of our sun in a galaxy 12 million light years from the Milky Way. The finding uses a technique never applied in this way before, and opens the door to new studies of these mysterious objects.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/p1uk-0QOMV4/140817220054.htm
