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    Sample Analysis at Mars tagged posts

    NASA’s Curiosity finds Chemistry of Mars Crust contributing to Atmosphere over time

    September 30, 2016, Categories  Astronomy/Space

    Processes in Mars' surface material can explain why particular xenon (Xe) and krypton (Kr) isotopes are more abundant in the Martian atmosphere than expected, as measured by NASA's Curiosity rover. Cosmic rays striking barium (Ba) or bromine (Br) atoms can alter isotopic ratios of xenon and krypton. Credit: NASA/GSFC/JPL-Caltech

    Processes in Mars’ surface material can explain why particular xenon (Xe) and krypton (Kr) isotopes are more abundant in the Martian atmosphere than expected, as measured by NASA’s Curiosity rover. Cosmic rays striking barium (Ba) or bromine (Br) atoms can alter isotopic ratios of xenon and krypton. Credit: NASA/GSFC/JPL-Caltech

    It’s another clue that the history of the Red Planet’s atmosphere is more complex and interesting than a simple legacy of loss. The chemistry findings come from the rover’s Sample Analysis at Mars, or SAM, instrument suite, which studied the gases xenon and krypton in Mars’ atmosphere. The two gases can be used as tracers to help scientists investigate the evolution and erosion of the Martian atmosphere...

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