A sheet of dark matter lying beyond the boundary of the Local Group is responsible for this.

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

Our Milky Way galaxy may not have a supermassive black hole at its center but rather an enormous clump of mysterious dark ...

On a clear night, the Milky Way and the Andromeda galaxy look like close neighbors. In space, they really are.

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

Astronomers propose that an ultra-dense clump of exotic dark matter could be masquerading as the powerful object thought to ...

There is a lot we have yet to understand about the center of the Milky Way—could it be due to a mass of invisible dark matter?

Pulsating remnants of stars hint at a clump of invisible matter thought to be about 10 million times the sun’s mass.

According to their model, this dark matter would naturally form a two-part structure: an extremely dense central core ...

For many years, scientists have tried to understand how the Milky Way is positioned in space, and how it moves together with ...

The dark matter distribution of a Milky Way mass halo in a Lambda-cold dark matter (LCDM) cosmological simulation. This is the highest resolution simulation of a MW-mass dark matter halo ever ...

The discovery reinforces established theories about space. There could be many more satellite galaxies orbiting the Milky Way than previously thought or observed, according to astronomers. As many as ...