Strange, 7-hour explosion from deep space is unlike anything scientists have seen — Space photo of the week Live ScienceBlack Hole Eats Star: NASA Missions Discover Record-Setting Blast NASA Science (.gov)This 7-hour cosmic explosion is the longest gamma-ray burst ever seen. Could it be from an elusive class of black hole? SpaceThe Longest GRB Ever Detected Is An Intriguing Puzzle Universe TodayWatch a black hole fall into a star and then blow it up National Geographic