A new gravitational model suggests dark matter may not exist. By allowing gravity to weaken more slowly at large distances, physicist Naman Kumar shows galaxy rotation curves can be explained using ...

Scientists have uncovered incredible truths about the universe, yet some mysteries still refuse to show us an explanation.

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...

The sharpest black hole collision ever detected just gave Einstein another win—and raised hopes that the next one might ...

For nearly a century, astronomers have watched galaxies spin and the universe expand in ways that visible matter alone cannot ...

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 ...

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

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

A study by physicists affiliated with the Foundational Questions Institute (FQxI) found that time exhibits tiny intrinsic uncertainties, which limit clock precision. The physicists add that these ...

A team of researchers led by the University of Warwick has developed the first unified framework for detecting "spacetime fluctuations"—tiny, random distortions in the fabric of spacetime that appear ...

Spacecrafts don’t just rely on rockets—they use planets to pick up speed! Spacecrafts don’t just rely on rockets—they use planets to pick up speed! It’s called a gravity assist, and it’s one of the ...

After holding onto the record for possessing the world's most powerful centrifuge (or hypergravity machine) for close to three decades, the U.S. ceded that title to China in 2025. When China's new ...