Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

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

Webb telescope discovered a bizarre exoplanet with carbon atmosphere, no hydrogen, orbiting a super-dense spinning star.

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

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