{"data":{"id":2677,"lang":"en","title":"Gas Leaks Over Fractures on Alba Mons Suggest Mars May Still Be Volcanically Active, ESA Orbiter Finds","summary":"ESA's Trace Gas Orbiter found unexpected hydrogen chloride over fresh fractures on Alba Mons, hinting at gas escaping from a dormant magma chamber.","category":"science","category_label":"Science","published_at":"2026-11-12T11:00:57Z","updated_at":"2026-11-12T11:00:57Z","url":"https://techtools.cz/tools/news/article/2677-gas-leaks-over-fractures-on-alba-mons-suggest-mars-may-still-be-volcanically","api_url":"https://techtools.cz/news-api/v1/articles/2677?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/2677.md?lang=en","image_url":"https://www.sciencedaily.com/images/1920/alba-mons-on-mars.webp","word_count":162,"reading_time_minutes":1,"sources":[{"url":"https://www.sciencedaily.com/releases/2026/11/261106174525.htm","domain":"sciencedaily.com"}],"translation":{"lang":"cs","id":2751,"title":"Úniky plynu nad trhlinami na Alba Mons naznačují, že Mars může být stále sopečně aktivní, zjistila sonda ESA","url":"https://techtools.cz/tools/news/clanek/2751-uniky-plynu-nad-trhlinami-na-alba-mons-naznacuji-ze-mars-muze-byt-stale-sopecne","api_url":"https://techtools.cz/news-api/v1/articles/2751?lang=cs"},"content":"Scientists led by Alexander Trokhimovskiy report that hydrogen chloride (HCl) gas was unexpectedly elevated in early northern summer over fractures on the slopes of Alba Mons, a giant Martian volcano. The detections came from the Atmospheric Chemistry Suite on ESA's Trace Gas Orbiter, and the paper appears in Science Advances. HCl normally drops to very low levels at that time of year.\n\nThe orbiter's CaSSIS camera showed narrow, fairly fresh fractures, some hundreds of meters long, with discolored ground around them. The team proposes that winter ice, with temperatures down to about -120°C, seals the cracks, and early-summer sublimation reopens them so gas from a possibly dormant magma chamber under Alba Mons can escape.\n\nThe study does not confirm current eruptions or life. If the explanation holds, it would mean Mars still has internal heat, and subsurface volcanic gases and hydrothermal systems could matter for habitability. ESA's Colin Wilson said the findings may prove to be the orbiter's greatest success yet."}}