The most powerful telescope ever launched into space uncovered a cluster of forming stars within the "toe beans" of the Cat's ...

The NASA/ESA Hubble Space Telescope has unveiled a stunning image of the Abell 209 galaxy cluster, located 2.8 billion ...

Some of these open clusters are pretty famous, such as the Pleiades cluster, also known as the Seven Sisters. This is ...

Caldwell 1, also known as NGC 188, is a group of stars formed from a large cloud of gas. Thus, they are roughly the same age.

This unprecedented view of the Bullet Cluster provided by the James Webb Space Telescope and the Chandra X-ray Observatory ...

The Chandra X-ray Observatory view of galaxy group NGC 4839 has revealed that it is "plunging into the Coma galaxy cluster ...

NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between ...

Because it doesn't interreact with light or electromagnetism, dark matter exists to us only through its influence on visible ...

Hubble captured the data used to create this image of ESO 591-12 as part of a study intended to resolve individual stars of ...

A distant galaxy 12 billion light-years away shows signs of being a jellyfish galaxy, with trailing streams of gas caused by ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

New observations support the idea that hot, diffuse threads of gas called cosmic filaments connect clusters of galaxies ...