The James Webb Space Telescope has caught a rare kind of exoplanet in the act of falling apart, revealing a world so light and distended that astronomers compare it to a ball of cotton candy. The ...

Astronomers have identified a vast, cotton-candy–light “super‑puff” world that loops around its star in a wildly misaligned orbit, defying the tidy rules that usually govern planetary systems. Instead ...

Our solar system may be the odd one out. Across the Milky Way, astronomers keep finding super-Earths, planets larger than our ...