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by grues-dinner
295 days ago
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Quite big tiny particles in this application: Xenon is a fairly hefty atomic number of 54 - exactly double iron. And you need quite a bit of it: even fairly small spacecraft like probes can have nearly a tonne of the stuff. Which, considering there's only 30-40ish tonnes extracted per year at a cost of about 1.5ish dollars per gram is quite a bit! |
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