THIS is the sharpest image ever taken near a supermassive black hole – and it solves a huge mystery that’s baffled scientists since the ’90s. Astronomers have long been stumped ...

Albert Einstein’s theory of gravity, general relativity, is famously incomplete. As proven by physics Nobel laureate Roger Penrose, when matter collapses under its own gravitational pull, the result ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The singularities at the centers of ...

Can we do away with the troublesome singularity at the heart of black holes? A new paper in JCAP reimagines these extreme objects in light of current knowledge. “Hic sunt leones,” remarks Stefano ...