The 13th day of the 18th annual Space Telescope Advent Calendar features part of a dense cluster of galaxies—a wide variety ...

An international team of researchers says it has spotted the largest rotating structure of dark matter and gas-rich galaxies.

For the first time, astronomers have captured the brilliance of a superluminous supernova via gravitational lensing.

Astronomers are learning more about the origins of supermassive black holes after new data is revealed from a 20-year-long ...

Most smaller galaxies may not have supermassive black holes in their centers, according to a recent study using NASA's Chandra X-ray Observatory. This contrasts with the common idea that nearly every ...

Cosmic dawn galaxies seen by JWST reveal hidden clues about dark matter and keep rival theories about its true nature alive.

"We might lose the ability to observe about 30% of the faintest galaxies. We are at the point of starting to be able to see ...

If you look across space with a telescope, you’ll see countless galaxies, most of which host large central black holes, billions of stars and their attendant planets. The universe teems with huge, ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

From your place inside the Milky Way, you are living within a galaxy that keeps a detailed chemical diary. Every star holds ...

Researchers have found a razor-thin, rotating string of galaxies inside a massive cosmic filament, revealing unexpected ...