Rogue black holes could be wandering at the edges of the Milky Way

Ripples in Space-Time Detected – Caused by the Death Spiral of a Neutron Star and a Black Hole

Alien 'Dyson spheres' could be harvesting the power of black holes

Advanced Civilizations Could be Using Dyson Spheres to Collect Energy From Black Holes. Here’s how we Could Detect Them