They cause explosions at birth
Two years ago, a gargantuan explosion rocked the universe. Last year, astronomers confirmed it was the brightest gamma-ray burst ever observed, and probably the “brightest burst…since human civilization began,” one study co-author said. Gamma-ray bursts are thought to mark the births of black holes, according to NASA, or the collisions of super-dense objects, like neutron stars and black holes. Even deep in the distant universe, these objects make their presence known.
