This American LifeThis American Life
Scientists have found ancient "impact glass" on the surface of Mars, which formed when asteroids struck, a billion or more years ago. If anything was alive at the time, biological materials could be trapped inside. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
Scientists have found ancient "impact glass" on the surface of Mars, which formed when asteroids struck, a billion or more years ago. If anything was alive at the time, biological materials could be trapped inside. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices
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