Astronomers See A New Class of Black Hole
Scientists say X-ray data collected by the European Space Agency's XMM-Newton spacecraft show evidence of a new type of black hole in a galaxy about 290 million light years from Earth. Astronomer Sean Farrell explains what the discovery might tell us about galaxy evolution.
Related NPR Stories
Black Holes Rely on Magnetism, Researchers Say June 21, 2006
Black Hole Strikes Neighboring Galaxy Dec. 21, 2007