Webb Confirms Giant Exoplanet 29 Cygni b Formed by Disk Accretion, Not Fragmentation
TL;DR Summary
JWST directly imaged 29 Cygni b, a ~15 Jupiter-mass exoplanet, and found it enriched in heavy elements with a disk-aligned orbit, supporting formation by rapid accretion in a protoplanetary disk rather than star-like fragmentation—placing it at the dividing line between planet and star formation.
Topics:science#accretion#disk-fragmentation#exoplanets#james-webb-space-telescope#planetary-formation#space
NASA’s Webb Redefines Dividing Line Between Planets, Stars NASA Science (.gov)
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