Tiny “Ferris wheels” made from light and extremely cold particles could allow researchers to test a facet of Albert Einstein’s theory of relativity on unprecedentedly small scales. Theories of special ...

A new technique may allow researchers to get a closer bead on the intrinsic strength of gravity, which is so feeble compared with other forces that its signature is easily drowned out in the ...

For the first time, physicists have used lasers to deep-freeze antimatter. In a new experiment, an ultraviolet laser quelled the thermal jitters of antihydrogen atoms, chilling the antiatoms to just ...