CAMBRIDGE, Mass., June 13 (UPI) -- A plethora of black holes have been discovered in the Andromeda Galaxy, one of the galaxies nearest to the Milky Way, a U.S. researcher said.
Using data from more than 150 observations by NASA's X-ray Observatory spread over a 13-year period, researchers identified 26 black hole candidates in Andromeda, said Robin Barnard of Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., and lead author of a paper describing the results.