These cosmic gluttons may be tight
Astronomers report a candidate pair of supermassive black holes only one-third of a light-year apart
By Ron Cowen, 14:31 PM March 4, 2009
Two astronomers may be seeing double. They report evidence that a galaxy about 4 billion light-years from Earth houses not one, but two giant black holes. Moreover, the duo might be separated by only one-third of a light-year — less than 10 percent of the distance between the sun and its nearest star system, Alpha Centauri.
Todd Boroson and Tod Lauer of the National Optical Astronomy Observatory in Tucson caution that their findings are preliminary. “This is a candidate, not a proven, binar...
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