Extraterrestrial Specks in Antarctic Snow Yield New Clues to Solar System's Past

Antarctica is nature's forensic freezer, preserving records of the past in layers of largely unsullied ice and snow that scientists have dug up to explore past geologic and atmospheric conditions. The southernmost continent has also proved an ideal hunting ground for meteorites, which stand out atop ice sheets and snowfields and tend to undergo little weathering and terrestrial contamination after arrival. [More]

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