Astronomers used RR Lyrae stars to trace the early Milky Way, revealing a rapid formation of its halo and disk, with chemical patterns similar to Andromeda.

For nearly a century, astronomers have known that the universe is expanding. Most galaxies are carried outward with the flow ...

A new photo taken by the world's most powerful telescope shows a 6-quadrillion-kilometre span of our galaxy.

Most of the universe is slipping away from the Milky Way, carried outward as space itself expands. Yet one giant neighbor is bucking the trend, racing straight at us while almost every other major ...

In A Nutshell A massive star in the Andromeda Galaxy faded by more than 10,000 times over a decade and vanished from view, ...

The structure of the local universe is surprisingly flat, according to new research, and this cosmic quirk may save our Milky Way from colliding with countless other massive, nearby galaxies — except ...

If confirmed, this disappearing act might provide the closest and best observational evidence for the birth of a black hole ...

An international collaboration using the Low Frequency Array (LOFAR) has published an exceptionally detailed radio sky map, ...

Their research was guided by a prediction from the 1970s: if a star collapses directly into a black hole, it should briefly ...

Scientists have seen something spectacular unfolding in Andromeda, our neighboring spiral galaxy, located some 2.5 million light-years away from Earth. The spectacular part is actually what they ...

Gravitational lensing exposed a distant protocluster once seen as a faint smudge, revealing eleven dusty star-forming galaxies through combined ALMA and NSF VLA observations.