![\"Spectral](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/03\/Spectral-Decomposition-Reveals.png\")
<\/p>\n <\/p>\n
\n Qualitative projections of the best-fit three-dimensional spherical-harmonic model to the jointly decomposed first spatial mode, u(1), derived from three viewing geometries of Europa\u2019s leading hemisphere. (e) Water-ice 3.1 \u00b5m Fresnel peak (\u2113max = 6). (g) CO2 absorption doublet near 4.25 \u00b5m (\u2113max = 7). Shaded outlines mark Tara, Powys, and the leading-hemisphere part of Annwn Regiones. The left panels show jointly decomposed spectral modes (v(0) and v(1) in gray and black, respectively) and spectra from the spaxels where the joint spatial mode peaks (blue) and reaches its minimum (red). \u2014 astro-ph.EP <\/p>\n
Competing processes shape Europa\u2019s surface: geological activity replenishes material through resurfacing, while bombardment by charged particles alters surface chemical composition. Each process leaves distinct spectral signatures.<\/p>\n
We present a novel data-driven analysis of JWST NIRSpec-IFU observations of Europa\u2019s leading hemisphere across three observing geometries, targeting nine spectral bands sensitive to water ice, radiolytic products, and volatiles.<\/p>\n
Through spectral factorization, we isolate the dominant components of spectral variability and reconstruct their spatial distributions.<\/p>\n
We find that CO2 enrichment extends beyond Tara Regio, and covers multiple chaos units in a lens-like pattern. These CO2-enriched areas co-occur with anomalous ice-texture signatures.<\/p>\n
Together, these findings suggest that enrichment in volatiles on Europa may reflect retention-favorable near-surface microphysics as well as emplacement, refining how they are interpreted in the context of surface\u2013interior exchange. This has implications for interpreting the sources and supply rates of extant carbon-bearing species and, ultimately, for assessing Europa\u2019s habitability.<\/p>\n
Gideon Yoffe, Sahar Shahaf<\/p>\n
Comments: Accepted for publication in The Astrophysical Journal Explorers Club Fellow, ex-NASA Space Station Payload manager\/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na\u2019Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he\/him) \ud83d\udd96\ud83c\udffb<\/p>\n","protected":false},"excerpt":{"rendered":"Qualitative projections of the best-fit three-dimensional spherical-harmonic model to the jointly decomposed first spatial mode, u(1), derived from…\n","protected":false},"author":2,"featured_media":541595,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[49,48,9978,176122,29279,191246,79674,16125,211334,194634,24764,135807,66,211335,211336,47935],"class_list":["post-541594","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-ca","tag-canada","tag-cartography","tag-cryosphere","tag-europa","tag-glaciation","tag-habitability","tag-habitable-zone","tag-https-astrobiology-com-2026-03-astrogeology","tag-icy-world","tag-jwst","tag-nirspec","tag-science","tag-spectorscopy","tag-tara-regio","tag-water-ice"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts\/541594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/comments?post=541594"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/posts\/541594\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/media\/541595"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/media?parent=541594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/categories?post=541594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ca\/wp-json\/wp\/v2\/tags?post=541594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Instrumentation and Methods for Astrophysics (astro-ph.IM); Applications (stat.AP)
Cite as: arXiv:2603.10520 [astro-ph.EP] (or arXiv:2603.10520v2 [astro-ph.EP] for this version)
https:\/\/doi.org\/10.48550\/arXiv.2603.10520<\/a>
Focus to learn more
Submission history
From: Gideon Yoffe
[v1] Wed, 11 Mar 2026 08:26:24 UTC (37,488 KB)
[v2] Thu, 12 Mar 2026 13:55:15 UTC (37,488 KB)
https:\/\/arxiv.org\/abs\/2603.10520<\/a>
Astrobiology<\/p>\n![\"\"\/](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2025\/09\/keith_cowing.jpg\")
<\/p>\n