Faint structures play a crucial role in cosmic development, and scientists are only just beginning to grasp their full extent ...

A galaxy made almost entirely of dark matter, an elusive form of matter that doesn’t interact with light, was spotted by Hubble 250 million light-years from Earth.

“The Euclid data clearly confirm the presence of the extremely faint, diffuse light of CDG-2, revealing the galaxy behind the ...

When you look up at the night sky, it appears unchanging. But if you look deep enough you will find that the sky is in fact ...

Four galaxies crowd the center of a collapsing structure 1.4 billion years after the Big Bang. Each one is churning out stars at a pace that defies comparison with the present-day universe. Around ...

A tight clump of four star clusters sits in the Perseus galaxy cluster, and at first glance it looks like nothing special. No ...

Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster.

A team of astronomers has identified an extremely faint galaxy called CDG-2, located roughly 300 million light-years from Earth, where an estimated 99% of its total mass is made of invisible dark ...

A global team led by UMass Amherst identified dusty, star-forming galaxies nearly 13 billion years old, bridging gaps between early ultrabright and quiescent galaxies in the universe.

NASA's Hubble Space Telescope captures the magnificent starry population of the Coma Cluster of galaxies, one of the densest known galaxy collections in the universe — and where the effect of dark ...

One third of the galaxy’s entire stellar output is locked away in just a few dense balls of stars. The rest is just a thin, cold “field” of stars barely clinging to existence. It is, for all intents ...