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they all amongst the most spectacular phenomena but also the most dangerous predicting when volcanoes will erupt though is notoriously difficult merry there got the flag up now and you could not the moon's all kind of pasta yield some clues scientists asserting rock samples collected in the Apollo missions up to fifty years ago this one came from Apollo fifteen poverty was first mission where they had the rover so they're able to traverse a lawyer %HESITATION along a larger area so this is from %HESITATION volcanic area not unlike white so what is it about rocks from the moon that make them so different looking at main rocks because I have something very special in that they were formed in a lower gravity environment and that changes how the crystals in the mail behave with one another as they forming societies like this gives us a baseline to understand processes that happen at terrestrial gravity on a lease %HESITATION basalts from the Apollo twelve in Apollo fifteen mission more than two thousand separate samples of brought we collected by six Apollo missions to the moon every rock weighing almost four hundred kilograms eighteen of those samples have been line from NASA to Britain's diamond light source a cyclic particle accelerator the Oxford , elections are accelerated to close to the speed of light until they met like ten billion times brighter than the sun this allows scientists to study by new specimens in extreme detail using X. ray beams giving us a glimpse of the future from an all together different world we can monitor what's happening in a volcano in the present it's very difficult to see the future because we have a reference to the past but rocks contain the kind of information that we need to know to make decisions in the present