In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

Hints of a mirror cosmos have a way of gripping the imagination, and recent chatter about “first proof” of a parallel ...

There's a certain logic to how human civilization operates. Some say it's predetermined by physics, others point to ...

Parallel worlds sound like science fiction, but modern physics paints a different picture. Quantum mechanics suggests that ...

These movies speculate hard enough to bend space-time, whether you’re seeking a crowd-pleaser or a lo-fi sci-fi indie.

Specifically, physicists and philosophers tend to conflate what it means for something to exist and what it means for ...

In 1919, physicist Theodor Kaluza hypothesized that extra dimensions might solve some outstanding problems in physics. And while we haven't found any evidence yet for anything outside our normal ...

The universe’s expansion might not be accelerating but slowing down, a new study suggests. If confirmed, the finding would upend decades of established astronomical assumptions and rewrite our ...