Learn how dozens of galaxies may have merged into a giant galaxy shortly after the Big Bang.

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

Astronomers have witnessed the earliest gathering of galaxies ever seen, taking place about 12.8 billion years ago. The ...

This illustration shows a galaxy forming only a few hundred million years after the big bang, when gas was a mix of transparent and opaque during the Era of Reionization. Data from NASA’s James Webb ...

Two far-away galaxies have been described as “blood-soaked eyes” by NASA after the Hubble and James Webb Space telescopes captured an intriguing video of the two colliding galaxies. NASA says the ...

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 ...

NASA's James Webb Space Telescope observed three galaxies in the universe's very early stages. The galaxies were likely forming around when our universe was 400 million to 600 million years old.

A nearby dwarf galaxy poses an intriguing mystery: How is it able to form brilliant star clusters without the dusty, gas-rich environments found in larger galaxies? The answer, astronomers believe, ...

Almost all the light we see in the universe comes from stars which form inside dense clouds of gas in the interstellar medium. The rate at which they form (referred to as the star formation rate, or ...

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

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