Astronomers just got a deep peek at a black hole

In an enormous effort that stunned the world, scientists last year unveiled the first direct picture of a black hole, allowing humans to see what exists at the cusp of the monster’s maw. Now, astronomers have used a different technique involving x-ray “echoes” to peer even closer at one of these gravitational behemoths. The black…

Astronomers probably just saw a black hole swallow a dead star

Some 900 million years ago, a black hole released a terrible belch that echoed through the cosmos. On August 14, the resulting ripples in the fabric of spacetime passed through Earth—giving us the best evidence yet of a never-before-seen type of cosmic collision that could offer new insights on how the universe works. The detection,…