{"schema":"hottub-news/story/v1","story":"st_nv23pbwr3xetl7iu4o3q","title":"JWST Reveals the Kuiper Belt-like Compositions of the Uranian Rings and Small Moons","title_en":null,"outlets":1,"brief":null,"page":"https://hottub.news/stories/jwst-reveals-the-kuiper-belt-like-compositions-of-the-uranian-rings-and-nv23pbwr3x","count":1,"items":[{"id":"n_nv23pbwr3xetl7iu4o3q","seq":608018,"kind":"research","title":"JWST Reveals the Kuiper Belt-like Compositions of the Uranian Rings and Small Moons","url":"https://arxiv.org/abs/2609.31923","summary":"arXiv:2609.31923v1 Announce Type: new Abstract: We present the JWST NIRSpec 1--5 micron spectra of the Uranian rings and four ringmoons: Puck, Perdita, Portia, and Juliet. We find that the compositions of the rings and moons strongly resemble water-type Kuiper belt objects, showing deep 3.0 micron O--H and water ice features as well as the CO$_2$ band at 4.27 micron. The volatiles show a radial trend of decreasing volatile abundance at closer radial distance to the planet…","published":"2026-09-29T04:00:00Z","seen":"2026-09-29T07:46:41Z","lang":"en","source":{"id":"arxiv-astro-ph","name":"arXiv astro-ph (astrophysics)","domain":"arxiv.org","outlet":{"wikidata":"Q118398","name":"arXiv","type":"website","country":"US","designations":["bibliographic database","disciplinary repository","online database","open science tool","preprint server","website"]}},"via":"arxiv-astro-ph","topics":["space","astrophysics","astro-ph.ep"],"authors":["Matthew Belyakov, M. Ryleigh Davis, Zachariah Milby, Ian Wong, Michael E. Brown"],"entities":[{"id":"Q186447","name":"James Webb Space Telescope","type":"org"}],"story":"st_nv23pbwr3xetl7iu4o3q","category":"science-technology","category_p":0.6000000238418579,"sentiment":"neutral","tone":0.10999999940395355,"political":0.12999999523162842}]}