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The Year in Physics
...wormholes and holograms — will one day bear glorious fruit. Progress on the Black Hole Information Paradox Here’s an extremely brief version of the black hole information paradox: Stuff...
In Search of Cracks in Albert Einstein’s Theory of Gravity
...but it doesn’t explain what happened at the Big Bang, or what happens inside black holes. The singularity of a black hole is mathematically very similar to the Big Bang...
A New Geometry for Einstein’s Theory of Relativity
...and how planets, stars and galaxies move. It tells us that the universe is expanding, and it predicted the existence of both black holes and gravitational waves a century before...
Physicists Rewrite a Quantum Rule That Clashes With Our Universe
...experiment where unitarity looks creaky involves black holes, intense concentrations of matter that warp space-time into a dead end. Stephen Hawking calculated in 1974 that black holes evaporate over time,...
Hopes of Big Bang Discoveries Ride on a Future Spacecraft
...a few billion. This will let LISA listen in on astrophysical events that ground-based observatories can’t “hear,” such as the mergers of supermassive black holes (as opposed to star-sized black...
The Physicist Who’s Challenging the Quantum Orthodoxy
...the black hole’s event horizon. But if the black hole evaporation process is indeterministic then there’s no paradox. We never learn what was thrown into the black hole because predictability...
Physicists Find a Way to See the ‘Grin’ of Quantum Gravity
...nature of gravity and space-time must be revealed — always hide behind the horizons of black holes. “Even a few years ago it was a generic consensus that, most likely,...
The Year in Physics
...April — a dark void, encircled by a luminous ring, humanity’s first-ever look at a black hole. The existence of black holes had not been in doubt, of course: Astronomers...
The Year in Physics
...unique. It singlehandedly upends notions about the young universe. Black holes were thought to have come along only after the formation of galaxies, once stars gravitationally collapsed into black holes...