Our universe appears to be doing so now, which means that over time more and more stars are disappearing outside of our view.

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

For the first time, physicists have simulated what objects moving near the speed of light would look like — an optical ...

Planets that orbit white dwarf stars should be too hot to host alien life, theories suggest. But a new study accounting for ...

Gravitational waves are energy-carrying waves produced by the acceleration or disturbance of massive objects. These waves, ...

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

The gravitational lensing that causes this rare phenomenon cannot be explained solely by looking at observable ...

The discovery of HerS-3, an unusual Einstein Cross galaxy, opens new avenues for studying dark matter and the early Universe.

Due to the lapse in federal government funding, NASA is not updating this website. September 2025 marks ten years since the first direct detection of gravitational waves as predicted by Albert ...

Alexander Grothendieck was a titan in his field, making deep connections that fuelled a revolution in mathematics, before ...

LIGO is an observatory that detects gravitational waves — ripples in spacetime caused by massive accelerating objects like merging black holes. It was the first to confirm their existence, supporting ...

Forget the Turing test. In Sam Altman's world, the only verdict that matters comes from physicist David Deutsch.