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Canadian-built and operated Mars Science Laboratory (MSL), Curiosity rover, Alpha Particle X-ray Spectrometer (APXS) instrument nears the end of its 7th year of analyzing geochemistry on Mars

Looking towards the centre of Gale crater, Mastcam mosaic showing the APXS pointing up, at the end of the robotic arm (Credit: NASA/JPL-Caltech/MSSS) Dr. Lucy Thompson Dr. Lucy Thompson is a geologist/planetary scientist at the Planetary and Space Science Centre,...