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Physicists Argue That Black Holes From the Big Bang Could Be the Dark Matter
...same problem, he found a twist. Primordial black holes would indeed form binaries. But Jedamzik concluded that in a universe teeming with black holes, a third black hole would often...
The Physicist Who Slayed Gravity’s Ghosts
...find amazing about general relativity is that it tells you precisely when it stops working. Out of the laws of general relativity come black holes. From the outside, we think...
Social Distancing From the Stars
...my most exciting research — explaining odd variations in the brightness of Betelgeuse, studying the home galaxies of newborn black holes halfway across the universe, finding a strange new star...
How the Bits of Quantum Gravity Can Buzz
...extreme places: around the time of the Big Bang, or in the heart of black holes. “The problem with black holes is that they’re black, and so nothing comes out,”...
Spotting Quantum Black Holes in the Lab
Can we test speculations about how quantum physics affects black holes and the Big Bang? In physics, we discover a new law by making a guess, and then comparing the...
The Hidden Magnetic Universe Begins to Come Into View
...objects called blazars located behind voids. Blazars are bright beams of gamma rays and other energetic light and matter powered by supermassive black holes. As the gamma rays travel through...
This Cosmologist Knows How It’s All Going to End
...eventually star formation halts, because there’s no new material being brought in. The stars you have burn out. A lot of things fall into black holes, then the black holes...
Why Gravity Is Not Like the Other Forces
...and black holes: Black holes are the reason it’s difficult to combine gravity with quantum mechanics. Black holes can only be a consequence of gravity because gravity is the only...
A Surprise Discovery Points to the Source of Fast Radio Bursts
...outnumbered the events. The ideas include a variety of wild scenarios involving evaporating black holes, snapping cosmic strings, and even the propulsion systems of alien civilizations. But as the number...