Why is the universe expanding at an ever-increasing rate? This is one of the most exciting yet unresolved questions in modern ...

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

Some habitable worlds orbiting dead stars could be kept alive for aeons thanks to a quirk of Einstein’s theory of gravity ...

Einstein’s theory of relativity reshaped our understanding of time space and gravity But deep inside its equations lies a ...

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

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

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

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

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

A controversial prediction about black holes and the expansion force of the universe could explain a cosmology mystery ...

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

Astronomers have captured the first radio image of two supermassive black holes orbiting each other within the quasar OJ287, ...