Scientists search for "decaying" dark matter (DDM) because it offers unique signatures like specific X-ray or gamma-ray lines ...

A mysterious excess of far-ultraviolet light seen across the Milky Way could come from the annihilation of clumpy dark matter ...

Their study gives new insight into the relationship between dark matter and supermassive black holes when the universe was still very young, and how galaxies have evolved until today. Figure 1. Left: ...

The Perseus cluster is a vast swirl of thousands of galaxies, all bound together by gravity. Famed for its unbelievable size — containing the mass of some 600 trillion suns — it also has a reputation ...

Two massive galaxy clusters are slamming into each other, and for once astronomers are not reconstructing the crash from the ...

By studying tiny distortions in the shapes of distant galaxies, scientists mapped dark matter and dark energy across one of the largest sky surveys ever assembled. Their results back the standard ...

(CNN) — At the center of our galaxy, there’s a mysterious, diffuse glow given off by gamma rays — powerful radiation usually emitted by high-energy objects such as rapidly rotating or exploding stars.

When you buy through links on our articles, Future and its syndication partners may earn a commission. A diagram-type image representing stellar shells and tidal streams in haloes of nearby galaxies. ...