Photograph of the chaotic formations inside the Popigai crater in Siberia revealed a concentration of platinum group elements that suggest an asteroid, not a comet, did the digging. Image courtesy of Philippe Claeys
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Photograph of the chaotic formations inside the Popigai crater in Siberia revealed a concentration of platinum group elements that suggest an asteroid, not a comet, did the digging. Image courtesy of Philippe Claeys |
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