inspect its rocks by hand.]]> muddled up the mineral structure inside, though the chemicals themselves were mostly unchanged.]]> evidence.]]> examined a meteorite known as Northwest Africa 5298.]]> atmosphere, these meteorites provide a lot of information.]]> durable little minerals.]]> meteorite known as Northwest Africa 5298.]]> diameter of a human hair," said geochemist Axel Schmitt.]]> interpret what they see when they can't agree on how old a rock is.]]> hurtling through space.]]> dislodged on the inside," Schmitt said.]]>