The tiny pebbles left over from a star's formation fed the growth of one of the strangest, wildest worlds humanity has ever ...

This image of massive galaxy cluster MACS J0416.1-2403 was part of the Hubble Space Telescope's Frontier Fields project, which combined the power of natural "gravitational lenses" in space.  The ...

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

Take a tour of the Hydra I galaxy cluster. A galaxy in the region, NGC 3312, is "losing cold gas as it moves through the hot ...

Either we are uncovering something entirely new, or we’re seeing a known type of object emitting radio and X-ray waves in a ...

Astronomers have discovered an intriguing, near-perfect spherical object deep within the Milky Way galaxy, unlike any known celestial body.

There's no shortage of round celestial objects in our universe. Planets, moons and stars all exhibit lovely spherical shapes.

Located in the Central Molecular Zone (CMZ), these filaments could be a part of a cyclical process in one of the galaxy’s ...

A massive barred spiral galaxy from the early Universe has stunned astronomers by forming stars at 300 times the rate of the Milky Way, without signs of a galactic collision. Using Webb and ALMA, ...

A galactic pileup 94 million light-years away is giving astronomers a detailed look at how cosmic collisions shape the universe.

Harvard astronomer Avi Loeb discusses the hypothetical use of highly energetic events as a way to produce "gravitational-wave ...