Astronomers See A New Class of Black Hole - NPR
 Laboratory Equipment | Astronomers See A New Class of Black Hole NPR Talk of the Nation, July 3, 2009 ยท 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 ... New Class of Black Holes Discovered New Class of Black Hole Found? Backstory to detecting a possible middleweight black hole |
