An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

WASHINGTON — For the first time ever, astronomers have confirmed the existence of a "failed galaxy," a massive, starless ...

The discovery of thousands more galaxies with stars ringing their main disks could help astronomers study galactic evolution ...

QSO1. It lived just 700 million years after the Big Bang and already had a mass about 50 million times that of the Sun.

JWST has identified nine distant, compact galaxies that do not fit existing categories, raising new questions about how galaxies formed in the early Universe.

Astronomers have identified Cloud 9, a nearby dark matter halo filled with gas but no stars. The discovery supports key predictions about how galaxies form and why some never do.

Three merging galaxies host three active black holes, offering rare insight into galaxy and black hole growth.

Astronomers working with the Hubble Space Telescope have identified an entirely new type of cosmic object. It is a cloud rich ...

Far beyond the bright pinwheels and glowing nebulae that dominate space photography, astronomers have finally confirmed ...

Astronomers found a young galaxy cluster with unexpectedly hot gas, suggesting cosmic structures formed faster than once ...