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The solar system's smallest planet has been shrinking at an unexpected rate, researchers announced on Thursday. tags mercury shrinking planet mariner shrinkWhen NASA's Mariner 10 probe flew by Mercury in 1974 and 1975, it returned images of strange cliffs called 'scarps' that cut across all sorts of geological formations. That suggested that the planet's surface has contracted over time. picked by AutumnLotus 5 months ago |
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