{"ok":true,"trend":{"id":636734,"platform":"news","region":"global","key":"delta morphology reveals timings of early ocean regression and hydrologic shift on ancient mars","title":"Delta morphology reveals timings of early ocean regression and hydrologic shift on ancient Mars","url":"https://news.google.com/rss/articles/CBMiX0FVX3lxTE42d1d1Q3dmSWtCdjFPMG1ud3dEbGhYVVVLa2w0WWp3elBPT2R0SGJON21HLUxSU3VPbGdNUUdsdmJTQUh1M3h6OWhjaFNSOHVkU2ZPaXk3Q1NfM1g2LWsw?oc=5","first_seen":"2026-10-01T17:55:17.317032Z","last_seen":"2026-10-01T19:17:41.126049Z","last_rank":6,"peak_rank":5,"last_volume":null,"peak_volume":0,"seen_count":2,"score":58.08,"category_hint":"oceans","section":"environment","category":"oceans","summary":"A study published in Nature uses the shape of deltas on Mars to establish timings of an early ocean's retreat and a broader shift in the planet's water cycle billions of years ago. By analysing delta morphology, researchers link changes in sediment deposits to when surface water began declining, offering new constraints on how long Mars stayed habitable.","why":"New research sheds light on when and how Mars lost its early ocean, a central question about the planet's habitability.","tone":"neutral","entities":["Mars","Nature"],"summarized_at":"2026-10-01T17:55:46.745869Z","meta":{"via":"scan","lang":"en","term":"ocean","source":"Nature","published":"Thu, 01 Oct 2026 14:41:42 GMT"},"nw":null,"promo":null,"kind":null,"importance":null,"hidden":false,"hide_reason":null,"judged_at":null,"title_en":"Martian delta landforms date ancient ocean retreat, study says","section_name":"Environment","category_name":"Oceans","timeline":[{"captured_at":"2026-10-01T17:55:17.317032Z","rank":5,"volume":null},{"captured_at":"2026-10-01T19:17:41.126049Z","rank":6,"volume":null}],"posts":[{"platform":"news","url":"https://news.google.com/rss/articles/CBMiX0FVX3lxTE42d1d1Q3dmSWtCdjFPMG1ud3dEbGhYVVVLa2w0WWp3elBPT2R0SGJON21HLUxSU3VPbGdNUUdsdmJTQUh1M3h6OWhjaFNSOHVkU2ZPaXk3Q1NfM1g2LWsw?oc=5","author":"Nature","title":"Delta morphology reveals timings of early ocean regression and hydrologic shift on ancient Mars","snippet":null,"posted_at":"2026-10-01T14:41:42Z","likes":null}],"elsewhere":[],"window":"7d"}}