Black holes are rampaging through our universe at more than 2.2 million mph and scientists think they now know why

• Scientists have created new computer simulations to study what happens during a supernova.
• Their models show that sometimes when stars die, they form a black hole that goes screaming into space.
• These black holes get kicked into space, moving as fast as 1,000 kilometers per second. 

Scientists studying how supernovas explode may have discovered a new process for how certain black holes form.