So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

Choose your fighter for the origin of water on Earth! Was it always here or did it come to this planet from somewhere else in ...

New research explains how dust links the formation, evolution, and fate of stars and planets, and why future telescopes are needed to observe these processes in detail ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

NASA has selected advanced technologies to power a future space telescope designed to image Earth-like planets and search ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

Two separate research teams have observed a previously unseen microlensing event, confirming the existence of a particular ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.