By considering simple symmetries, physicists working on the "bootstrap" have rederived the four known forces. "There's just no freedom in the laws of physics," said one.
A close look at fundamental symmetries has exposed hidden patterns in the universe. Physicists think that those same symmetries may also reveal time's original secret.
A new look at a ubiquitous phenomenon has uncovered unexpected fractal behavior that could give us clues about the early universe and the arrow of time.
Mathematician Proves Huge Result on 'Dangerous' Problem
By KEVIN HARTNETT
Mathematicians regard the Collatz conjecture as a quagmire and warn each other to stay away. But now Terence Tao has made more progress than anyone in decades.
Astronomers Find Black Holes Stirring Up the Biggest Galaxies
By CHARLIE WOOD
After a space telescope disintegrated, astrophysicists had little hope of understanding how supermassive black holes agitate giant galaxies. Then they invented a hack.
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