This study compares the geochemistry of chondrules in the carbonaceous chondrite Allende to that of terrestrial komatiite and basaltic komatiite samples from the Archean eon. This comparison provides ...

The Hadean eon represents the time from which Earth first formed. The subsequent Archean eon (approximately 3,500 million years ago) is known as the age of bacteria and archaea. The Proterozoic ...

This trilogy consists of 3 x 30 HD episodes that cover the history of our planet and the most ancient life on it during the Hadean, Archean and Proterozoic eons (from 4.6 billion years ago until ...

But, they say that life likely gained a foothold by the end of the Hadean era and left evidence in the geological records of the Archean period that followed.