# #1759 : L'atmosphère d'une mini-Neptune dévoile son histoire migratoire

Page: https://stenobird.com/podcast/a-se-passe-l-haut-745418/1759-l-atmosph-re-d-une-mini-neptune-d-voile-son-histoire-migratoire
Text version: https://stenobird.com/podcast/a-se-passe-l-haut-745418/1759-l-atmosph-re-d-une-mini-neptune-d-voile-son-histoire-migratoire.md
Podcast: [Ça Se Passe Là-Haut](https://stenobird.com/podcast/a-se-passe-l-haut-745418)
Published: 2026-05-10T08:38:00+00:00
Episode link: https://www.ca-se-passe-la-haut.fr/2026/05/latmosphere-dune-mini-neptune-devoile.html
Audio file: https://stats.podcloud.fr/casepasselahaut/numero-1759-latmosphere-dune-mini-neptune-devoile-son-histoire-migratoire/enclosure.2280afa5adcad8cd09703781dec3d1a9971571e82f55dfcc78c9315d8efcd711.mp3?p=f
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Duration seconds: 709

## Resource

De nouvelles mesures portant sur une Jupiter chaude et sur sa compagne de type mini-Neptune indiquent que ces deux exoplanètes se seraient formées à des distances notablement plus grandes de leur étoile hôte que ne le suggère leur configuration actuelle. L'étude est parue dans The Astrophysical Journal Letters. Source JWST Unveils a High Mean Molecular Weight Atmosphere for Mini-Neptune TOI-1130 b: Evidence for Formation Beyond the Water Ice Line Saugata Barat et al. The Astrophysical Journal Letters, Volume 1002, (5 mai 2026) https://doi.org/10.3847/2041-8213/ae5f8b Illustrations Vue d'artiste du système de TOI 1130 (Sci-News.com) Saugata Barat

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