Technology & Science
JWST Spots Carbon-Helium ‘Space Lemon’ Orbiting a Pulsar
On 16 Dec 2025, Webb spectroscopy exposed PSR J2322-2650b—a Jupiter-mass body circling a millisecond pulsar—as the first known world with a helium-and-molecular-carbon atmosphere and a 38 % tidal stretch, overturning existing planet-formation models.