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Between 3.8 and 2.4 billion years ago, the Archean eon, life evolved on Earth. At the same time the Sun was only running at about 70 percent of what it does now. At that rate, the Earth shouldn’t have had any liquid water, and consequently should not have had life. However, that’s not what the record shows.
"To counter the effect of the weaker Sun, carbon dioxide concentrations in the Earth's atmosphere would need to have been 1,000 times higher than present," said lead author Bernard Marty, from the CRPG-CNRS University of Lorraine. "However, ancient fossil soils—the best indicators of ancient carbon dioxide levels in the atmosphere—suggest only modest levels during the Archean. Other atmospheric greenhouse gases were also present, in particular ammonia and methane, but these gases are fragile and easily destroyed by ultraviolet solar radiation, so are unlikely to have had any effect."
Either our astronomy is lacking and we do not fully comprehend the solar cycles and development of stars (something for the electric universe proponents to ponder), or our fossil records and dating of ancient soils/organisms is inadequate.
What do you guys think? Do you have any ideas on which areas we are lacking in knowledge
The faint young Sun paradox ... was raised by astronomers Carl Sagan and George Mullen in 1972.
While reading an article on the origin of life on Earth, it mentions that during the supposed time frame of the emergence of life on Earth, the sun was too cold to sustain liquid water (liquid water is a necessity for life as we know it). Stars go through a 'cycle of life' where they start off colder and grow hotter with age. However, going by this cycle, our sun was much too cold to sustain life during the period we have attributed to the emergence of life on our planet. This is known as the Faint Young Sun Paradox.
This is probably the answer.
reply to post by Pistoche
There are other sources of heat, primarily radioactive elements that were in high concentrations in the early Earth.
in 1972 the remains of a natural, spontaneously formed uranium reactor were found in ancient rocks of the African nation of Gabon, in the Oklo uranium mine.