Recent studies show that wandering, nomadic black holes smaller than 10 billion solar masses greatly outnumber the central supermassive black holes in the universe at large, which would make for interesting, if not danger-fraught, future starship explorations of our Milky Way!  Typically, a supermassive black hole (SMBH) exists at the core of a … Continue reading “Ping Pong-Sized Monsters” -Primordial Black Holes Could Be of Any Size and Anywhere in the Milky Way