Gravity used to be the most down-to-earth of ideas, the thing that kept apples falling and planets in line. Now a growing ...

We preselected all newsletters you had before unsubscribing.

We have long taken it for granted that gravity is one of the basic forces of nature–one of the invisible threads that keeps the universe stitched together. But suppose that this is not true. Suppose ...

"If such a fifth force exists, it cannot exceed 7% of the strength of gravity." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists have ...

Hints of a new fundamental interaction are starting to look less like statistical ghosts and more like a pattern that refuses ...

Quantum mechanics is our most successful physical theory. Created to account for atomic phenomena, it has a vast range of applications extending well beyond the atomic realm, from predicting the ...

A number of experiments have been proposed to generate and witness gravitational entanglement, but Aziz and Howl’s work suggests that the presence of gravitational entanglement is not a ‘smoking gun’ ...