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Moon is the nearest planetary body that humans have access to. Not only have we sent orbiters and rovers to Moon, but also twelve men who have brough back lunar soil, rocks and core. Our understanding of lunar composition primarily comes from the analysis of these samples in terrestrial laboratories. In the last two decades, there has be been a revival of missions to the Moon given the promise it holds for science and exploration. One of the main enabling factors towards this is global mapping of the lunar surface composition. The Chandrayaan missions thus carried X-ray fluorescence spectrometers to map the surface composition globally. The talk will describe the experimental methods and highlight the scientific results. |