If so, laws might change when the universe itself changes phase. In the early universe, as temperatures and densities shifted, forces split apart from a unified origin. What we call “laws” may be like ...

Humanity has achieved remarkable feats, yet 95% of the universe remains invisible and unexplained. Our theories, general ...

Kellogg Stelle was a professor of physics at Imperial College London for decades until his death last month. In 1977, he developed a particle theory of gravity that’s renormalizable, but the theory’s ...

Yet according to physics, information is never destroyed. In principle, a burned book is just as readable as the original—if ...

At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it?

We live in the present, moving through time. As events come and go, everything fades into the past. But what is time, really?

On Nov. 2, Kip Thorne took the stage at Harvey Mudd College’s Galileo Auditorium to recount his 50 year odyssey of making ...

New evidence from the gravitational-wave event GW230814 shows that when two black holes merge, the horizon area of the ...

In 1980, Stephen Hawking gave his first lecture as Lucasian Professor at the University of Cambridge. The lecture was called ...

String theory unifies all the forces of nature. Forces that seem very different, such as gravity and electricity, are deeply ...