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

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

The suburbia of the Milky Way does not form a ball of matter with the center at its center. Rather, the mass around it is arranged in a wide, flattened form, which alters the sense of gravity back ...

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

Computer simulations carried out by astronomers from the University of Groningen in collaboration with researchers from ...

The Milky Way — and in fact our entire galactic neighborhood known as the Local Group — appear to be lodged in a vast, ...

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

(CNN) — A collision between our Milky Way galaxy and its largest neighbor, the Andromeda galaxy, predicted to occur in about 4.5 billion years, has been anticipated by astronomers since 1912. But new ...

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

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...