Abstract
The question arises whether organized life (as it exists on the Earth) exists on newly-found planets or not, such as Kepler 186f, in our Galaxy. The Earth’s evolution is defined by three critical factors: 1) Solar luminosity, 2) The distance between the Earth and Sun and 3) The Earth’s mass and chemical compositions. All these variables were favorable for the emergence and development of highly-organized life on our Earth.
Highlights
The distance of our Earth from the sun is optimal
The question arises whether organized life exists on newly-found planets or not, such as Kepler 186f, in our Galaxy
The Earth’s evolution is defined by three critical factors: 1) Solar luminosity, 2) The distance between the Earth and Sun and 3) The Earth’s mass and chemical compositions. All these variables were favorable for the emergence and development of highly-organized life on our Earth
Summary
The distance of our Earth from the sun is optimal. If this distance were smaller, the surface would have been too hot and an irreversible greenhouse effect (like the one on Venus) would have occurred [1]. If the distance were greater, the Earth would have been frozen and become the “white” planet with stable ice-cover. If the Earth would not have had a massive satellite, the tectonic activity of Earth (like Venus) would have been delayed by 2.5 to 3 billion years [2]. Under such a scenario, the conditions of the Late Archaean time (high surface temperatures and dense carbon dioxide atmosphere) would have been dominant on Earth. Instead of contemporary highly-organized life species, the Earth would have been populated only by primitive bacteria (single-cell prokaryotes)
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