Through a Lens, Darkly
ScienceNow: For the first time, astronomers have confirmed that invisible objects float around the outskirts of our galaxy. Using a form of cosmic triangulation, they have identified what appears to be a double black hole some 16,000 light-years away. The result, presented here today at the 210th meeting of the American Astronomical Society, is an important step in unraveling the nature of dark matter.
