Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of ...

LIGO's GW250114 signal tests Einstein's relativity, revealing black hole properties and confirming key theorems in ...

From the fall of an apple to the glow of the farthest known star, gravity quietly choreographs almost everything that happens ...

Time is a straightforward concept - or is it? The passing of minutes and years isn't as easy to explain as many assume.

The way time ticks forward in our universe has long stumped physicists. Now, a new set of tools from entangled atoms to black ...

The most precise clocks ever built are now testing Einstein, hunting dark matter, and reshaping how we define time itself. In A Nutshell The world’s most precise clocks are changing how we understand ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational ...

A newly detected gravitational wave, GW250114, is giving scientists their clearest look yet at a black hole collision—and a powerful way to test Einstein’s theory of gravity. Its clarity allowed ...

Nearly 40 years after Stephen Hawking's A Brief History of Time, Sarah Alam Malik's epic exploration of the cosmos reflects a ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...