Yes, there are 100 million rogue black holes wandering our galaxy

Black holes aren't evil. But they are fantastically weird, gravitationally powerful places. And astronomers suspect there are some 100 million of these objects — realms so dense that not even light can escape their grasp — wandering our Milky Way galaxy. Now, for the first time, scientists published compelling evidence that they detected one of these rapidly moving, rogue black holes. This type of black hole is created when a star (around 20 times as massive as the sun) explodes and collapse...