Webb Detects Exotic Helium-and-Carbon-Rich Atmosphere around Pulsar-Orbiting Exoplanet

00:25 - 17 Dec 2025

PSR J2322-2650b, an enigmatic Jupiter-mass exoplanet orbiting the millisecond pulsar PSR J2322-2650, appears to have an exotic helium-and-carbon-dominated atmosphere unlike any ever seen before.

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