Ian Randall is Newsweek's Deputy Science Editor, based in Royston, U.K. His focus is reporting on science and health. He has covered archeology, geology, and physics extensively. Ian joined ...

"Black holes are so stealthy that this one has been practically under our noses this whole time." The galaxy next door to the Milky Way, the Large Magellanic Cloud (LMC), could be hiding a ...

Sgr A*, in turn, is dwarfed by some supermassive black holes detected in other large galaxies such as one with a mass 6.5 billion times greater than that of the sun in a galaxy called Messier 87.