Physicists predict the universe’s expansion will reverse, ending in a dramatic big crunch about 20 billion years from now.

This controversial theory says the universe is subject to an ultimate, higher-order law that we can’t comprehend.

Physicists claim they may have found a long-awaited explanation for dark energy, the mysterious force that's driving the accelerated expansion of the universe, a new preprint study hints. Their ...

Scientists are on the trail of a mysterious five-particle structure that could challenge one of the biggest theories in physics: string theory. This rare particle—never seen before and predicted not ...

String theory proposes tiny vibrating strings existing across 10 dimensions, unifying forces and particles beyond the ...

What if the universe remembers? A bold new framework proposes that spacetime acts as a quantum memory. For over a hundred ...

An illustration of two black holes about to merge and emitting copious gravitational waves. And as the numbers of gravitational-wave observations have increased, physicists’ careful modeling is ...

In 1992, three physicists began an argument about how many numbers we need to fully describe the universe. Their surprisingly ...

(via Sabine Hossenfelder) According to a growing body of data, dark energy is not constant. Instead, physicists claim, it’s slowly getting weaker. This has understandably shaken our understanding of ...

How exactly did the universe start and how did these processes determine its formation and evolution? This is what a study published in Physical Review Research hopes to address as a team of ...