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

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

For more than a century, astronomers have watched in astonishment as the Andromeda galaxy ignored the grand flow of cosmic expansion and hurtled straight toward the Milky Way. While almost every other ...

For years, astronomers have observed the strange motion of Andromeda, the Milky Way’s closest large galactic neighbor. While ...

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

Andromeda is also a flattened spiral like the Milky Way, but it's twice as large — 220,000 light-years across versus 105,000 for the Milky Way — and crammed with a trillion suns. Can you even begin to ...

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

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 ...

We live in a dark, dark, world. The post Our Entire Galaxy Appears to Be Embedded in a Colossal Sheet of Dark Matter appeared first on Futurism.

While two teams have ideas about what happened to yellow supergiant M31-2014-DS1, ultimately, it remains a mystery.