James Webb Space Telescope discovers a hot Jupiter exoplanet leaking twin gas tails that defy explanation
December 12, 2025
Astronomers have used the James Webb Space Telescope (JWST) to discover that a distant “hot Jupiter” planet has two staggeringly long tails composed of helium that currently defy explanation. The observations represent the first study of gases leaking from a planet beyond the solar system during one of its complete orbits, and help paint the most complete picture of atmospheric escape…