NASA's WISE mission sees skies ablaze with blazarsAstronomers are actively hunting a class of supermassive black holes throughout the universe called blazars thanks to data collected by NASA's Wide-field Infrared Survey Explorer (WISE). The mission has revealed more than 200 blazars and has the potential to find thousands more.
Source: NASA's WISE mission sees skies ablaze with blazars (http://www.sciencedaily.com/releases/2012/04/120412192740.htm)