Mars methane surge spotted from space 🛰️
There are a variety of ways methane might be produced on Mars.
If microbes still exist, they are one possible source. Methane produced by micro-organisms in the distant past could also get trapped within ice. When the ice melts, it could then release the ancient methane into the atmosphere. But there are geological processes that can produce methane, and don't require biology. These include serpentinisation - a process of mineral alteration in the crust involving heat and water. Methane can be made as a downstream product of serpentinisation.Scientists scrutinised the region around Gale for features where gas seepage is expected."We identified tectonic faults that might extend below a region proposed to contain shallow ice.
"Remarkably, we saw that the atmospheric simulation and geological assessment, performed independently of each other, suggested the same region of provenance of the methane." The ExoMars Trace Gas Orbiter, which is designed to make a detailed inventory of the Martian atmosphere, was launched in 2016. However, it has yet to report its science results.
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