In the early 1930s, Swiss astronomer Fritz Zwicky observed galaxies in space moving faster than their mass should allow, prompting him to infer the presence of some invisible scaffolding—dark ...

NASA's Hubble Space Telescope captures the magnificent starry population of the Coma Cluster of galaxies, one of the densest known galaxy collections in the universe — and where the effect of dark ...

Few things in the universe are as perplexing as dark matter — the invisible and exotic “stuff” that is thought to make up most of the matter in galaxies. The theory goes like this: To reconcile our ...

Nov. 26 (UPI) --More than 100 years after its existence was predicted, scientists report that they have, for the first time, seen dark matter. Scientists have been able to indirectly observe dark ...

A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By rethinking gravity and cosmic timelines, it could rewrite our ...

In the beginning of the universe, matter somehow outmaneuvered antimatter, creating the stuff-filled universe we know and love today. Scientists from two large long-baseline experiments in the U.S.