Astronomers have discovered a surprisingly small "dark object" lurking within a distant ring of warped light. The record-breaking find could help shed light on the mysterious identity of dark matter, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

It’s been about 11 years since Pluto was demoted to dwarf planet status, leaving a 1,473 mile (2,370 kilometers)-size void in our hearts. Since then, the hunt for Planet X—aptly renamed Planet 9—has ...

The record-breaking find could help shed light on the mysterious identity of dark matter, which would have major implications for the field of cosmology. The hidden object, likely a clump of invisible ...

(CNN) — 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 ...