KEY OBSERVATIONS Light from a dead star exploded ten billion years ago, yet it reached Earth not once, but several times, ...

Astronomers have finally watched a black hole do something Albert Einstein only described on paper: twist the very fabric of ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

For over a century, Einstein's general theory of relativity has been key to understanding gravity. But new research suggests this theory "glitches" in the farthest reaches of space. That doesn't mean ...

A century after Albert Einstein sketched out his radical picture of gravity, astronomers have now watched a black hole ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Image of the galaxy NGC 6505: the Einstein ring created by this gravitational lens can be seen in ...

Some discoveries arrive quietly, without fireworks or clean endings. Astronomers were watching a distant flare from a galaxy ...

Research teams on both sides of the Atlantic have shown that precise modeling of the universe and its contents will change the detailed understanding of the evolution of the universe and the growth of ...

Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves testing the fundamental ...

New impressions A visualization of a curved space–time “sea” from the general-relativity simulations carried out by the authors.(Courtesy: James Mertens) From the Genesis story in the Old Testament to ...

But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...

Dark energy, making up 70% of the universe, causes its accelerating expansion. Gravitational waves, predicted by Einstein, were detected from colliding black holes. The Event Horizon Telescope imaged ...