The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

The young galaxy cluster existed about 12.8 billion years ago and has an estimated mass 20 trillion times that of the sun ...

"JADES-ID1 is giving us new evidence that the universe was in a huge hurry to grow up." ...

The discovery reinforces established theories about space. There could be many more satellite galaxies orbiting the Milky Way than previously thought or observed, according to astronomers. As many as ...

In a Universe that was only 700 million years old, long before Earth even formed, something unexpected happened. A massive galaxy stopped forming stars and went silent. This type of galaxy, called ...

Astronomers have discovered powerful magnetic fields steering gas, dust, and star formation in a dramatic galaxy merger.

The red shade shows the atomic hydrogen gas content of the galaxy, overlaid on the optical image. The atomic gas that is outside the white circle does not contribute significantly to the formation of ...

A surprising new set of objects in space with mismatched parts has been discovered by University of Missouri astronomers, ...

New radio observations of molecular gas reveal how dozens of galaxies could have rapidly merged together in the early Universe.