JWST found no moons around LP 890-9 c — the most sensitive exomoon search yet
We have more than 6,000 confirmed exoplanets and not one confirmed moon around any of them. A preprint that went up on 2026-09-04 didn’t change that count. Columbia’s David Kipping pointed JWST at a temperate super-Earth about 100 light-years away, stacked twelve transits, and came up empty. No moon. What makes the paper worth reading is the empty part. It’s the most sensitive exomoon search anyone has run, and a clean non-detection is exactly the result the field needed to prove its main tool still works. ...