mathias malvo could be one of the next astronauts to actually bring back rocks from the moon. even stuff that even the scientists would rather spend an hour examining each stone collecting all kinds of possible data from them but on the moon i'll probably only have enough oxygen for 8 hours so that means that i have to work very quickly and efficiently there's no room for mistakes. in the field and that's the combination of constraints that you learn to deal with year to explore your available resources be aware of your own safety needs and complete the scientific tasks with 100 percent reliability. but to the untrained eye rocks all look pretty much the same whether it's here or on the moon like. the thank. you so do we ensure that they don't just pick up any old stone astronauts are also trained in geology. since apollo not being other planets so we focus on trying to create a geological training we want them to be good to feel geologists good. all of the scientists on earth. that's the beauty of and. that's. what we have here is all of being a mineral that comes from deep u