The researchers had initially selected a different target for Hubble.

NASA’s Hubble Space Telescope has captured some of the most detailed images ever recorded of comets breaking apart in space, offering a direct window into the fragile structure of these ancient icy ...

The discovery of CDG-2 began when a team of astronomers investigated tight groupings of stars called globular clusters, which ...

In a happy twist of fate, NASA's Hubble Space Telescope witnessed a comet in the act of breaking apart. The chance of that happening while Hubble watched is extraordinarily minuscule. The findings are ...

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...

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.

Hubble discovers CDG‑2, a galaxy 99.9% dark matter, revealing a cosmic phantom and reshaping our understanding of galaxy ...