The expansion of the Universe, discovered nearly a century ago by Edwin Hubble, shows that galaxies are moving away from us faster the more distant they are. Yet, our nearest neighbor, the ...

Two ways of measuring how fast the universe is expanding disagree, a puzzle known as the Hubble tension. Tiny magnetic fields ...

Hubble captures a dazzling stellar nursery where newborn stars light up and carve their way through glowing clouds in a ...

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 ...

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

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 ...

The enigma ties in with the American astronomer Edwin Hubble’s discovery nearly a century ago that the universe is expanding.

The solution to a persistent astronomical question that has puzzled scientists for half a century has emerged not from direct observation, but from the computing power of sophisticated computer ...

New observations from the Hubble Space Telescope have revealed surprising activity inside the Andromeda galaxy. The data ...

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

A new high-resolution map of distant galaxies may help scientists understand the mysterious dark matter holding the universe together.