Emergence of life in an inflationary universe
?This biological time corresponds to one and a half to two billion years, during whom we know on Earth the existence of life, starting with the Archeozoic. It ...
Thresholds in Origin of Life Scenarios - HALDespite this dynamic and occasionally dramatic history, the Earth has been persistently habitable?and, in fact, inhabited?for roughly 4 billion years. Earth: Atmospheric Evolution of a Habitable PlanetAbstract Solar radiation and geological processes over the first few million years of Earth's history, followed soon thereafter by the origin of life, ... Mission to Planet Earth: The First Two Billion Years1986). Life, as per the panspermic view, is believed to have been introduced to Earth some 4 billion years ago, with an ongoing incidence of microorganisms ...
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