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 ...
A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...
On a clear night, the Milky Way and the Andromeda galaxy look like close neighbors. In space, they really are.
A mysterious flash of X-ray emission from outside the Milky Way has left astronomers puzzled.
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A collision between ...
The Milky Way galaxy, comprised of billions of stars, will be visible in the night sky until the end of May, particularly between the last quarter moon (May 20) and the new moon (May 30). Light ...