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Forgive my ignorance of what sensors are on that platform. Are they doing spectroscopy? Can they just subtract the aluminum signature out of the data if they have extra of the exact batch they used for comparison?

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This is about samples returned to Earth, analysis is not constrained by instruments on a spacecraft

Oh this is the one that's returning samples to earth. Doy.

Thanks.

This is one of actually several ongoing sample return missions actually.

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