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Lunar cratering & cryogenian age
Fascinating report from Osaka University: "...the researchers calculated that up to 50 trillion tonnes of meteoroids could have hit Earth during this time. "As well as delivering useful elements to Earth, this deluge of impacts may help explain the climatic changes of the Cryogenian era that followed." https://www.natureindex.com/institution-outputs/japan/osaka-university/513906bb34d6b65e6a000163?utm_content=XXX00X&utm_source=sciencenews&utm_medium=cpc_native&utm_campaign=promotion_ep#highlight