When you look up at the night sky, it appears unchanging. But if you look deep enough you will find that the sky is in fact ...

Astronomers have spotted the brightest known object in the universe, and it’s a quasar powered by the fastest-growing black hole on record, according to a new study. Initially classified as a star, ...

The biggest objects in the universe are clusters of galaxies, such as the supercluster we live in right now - and including Abell 370, which was captured in a sprawling glittery space-scape by the ...

“Extraordinary claims require extraordinary evidence,” Carl Sagan once warned a maxim now resonating through telescopes worldwide as astronomers grapple with a mind-bending new discovery. The James ...

CAPE CANAVERAL, Fla. — Astronomers have discovered what may be the brightest object in the universe, a quasar with a black hole at its heart growing so fast that it swallows the equivalent of a sun a ...

Lead image: This artist’s conception depicts how the formation of the universe’s first stars may have appeared. Dense clouds ...

An artist’s illustration shows the largest radio jet ever found in the distant universe. - NOIRLab/NSF/AURA/M. Garlick Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with ...