dark matter

Massive gravitons may have formed a trillionth of a second after the Big Bang, in abundances great enough to account for dark matter.

Though scientists know there's a supermassive black hole at the center of most galaxies, they can't explain how the gravitational giants formed.

A mirror universe that runs backward in time sprouted up before the Big Bang.

Large galaxies may steal dark matter from smaller galaxies they nearly collide with, new research suggests.

The Higgs boson particle could have kept our universe from collapsing within a larger multiverse, physicists say.

The Pacific Ocean Neutrino Experiment would turn a massive swath of the Pacific Ocean into nature's own neutrino detector.

Astronomers mapped 12 stellar streams, which could lead to the Milky Way's missing dark matter.

The recently launched James Webb Telescope should help determine if dark matter is made up of primordial black holes.

On the surface, a galaxy 250 million light-years from Earth seems like any other, but a deeper look reveals a puzzling quirk: It seems to have no dark matter.

A tiny galaxy orbiting at the outskirts of the Milky Way appears to have a giant black hole at its center, comparable to that of the much larger Milky Way itself, and scientists don't know why.