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James Webb Space Telescope sees lonely supermassive black hole-powered quasars in the early universe

Using the James Webb Space Telescope, astronomers have peered back 13 billion years to discover surprisingly lonely supermassive black hole-powered quasars.  The James Webb Space Telescope’s (JWST) observations are confusing because isolated black holes should struggle to gather enough mass to reach supermassive status, especially just a few hundred million years after the Big Bang. […]

Kurozuka (Black Tomb)

Once upon a time, over a thousand years ago, a Buddhist monk named Yūkei was traveling across the Adachi-ga-hara plain when he sought a lodging for the night and found a cavern occupied by an old woman. She agreed to accommodate him on condition that he does not look inside the chamber at the back […]

What happens when black holes merge?

Black hole mergers are beautiful — and some of the most violent events in the cosmos. Here’s how the process unfolds. The story begins with two black holes orbiting far from each other in long, lazy circles. They could have been born as a binary pair of stars, or they may have just randomly encountered […]