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Scientists Just Figured Out How The Oldest Things On Earth Might Have Formed
The crust would have been heated by the lava lake, creating the perfect conditions for zircon to crystallize. The Hadean eon, which lasted from Earth's birth, 4.5 billion years ago, up to 4 ...
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When Did Life Appear on Earth? New Evidence Suggests It Started Shockingly Billions of Years Earlier than We Thought
The Hadean Eon—the first 500 million years of Earth ... and even traces of biological carbon in zircon crystals from 4.1 billion years ago. These findings remain controversial, but as Donoghue ...
Nature3y
Major events in the evolution of amino acid synthesis
The way amino acids are synthesized has changed during the history of Earth. The Hadean eon represents the time from which Earth first formed. The subsequent Archean eon (approximately 3,500 ...
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Deep Time
The Precambrian eon is vast, almost unimaginably so ... this includes all of geological time prior to the Cambrian period. Hadean Era (4,550-3,850 mya) The Precambrian's oldest era, the Hadean ...