The oldest rocks on Earth - Livescience.com
Earth has existed for 4.54 billion years
, and during that time, our planet has undergone a number of violent transitions. This makes it difficult for researchers to find out what happened during Ea… [+6429 chars]
, and during that time, our planet has undergone a number of violent transitions. This makes it difficult for researchers to find out what happened during Ea… [+6429 chars]
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