Last July, a shower of meteors fell to the desert sands of Morocco. Subsequent studies have shown the space rocks originated on Mars.
Some 220 pounds of rock that is recognized as coming from Mars now exist on Earth; about ten percent of that total comes from the new Moroccan haul. Scientists and collectors are now scrambling to snap up as many of the rocks as possible.
This particular bunch of rocks could play a role in the search for life on Mars. Because we know precisely when the rocks arrived on Earth and were able to collect them quickly, if studies find evidence suggesting life, it's a good bet that evidence also come from Mars.
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