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Solar system occured and the sun began to form by material.
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Earth began to form by colliding with space debris.
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organic molecules accumulate old rocks and crystals
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Archael species populated earth like the cellular life did when earth began.
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lynbgya cells grew and formed stromatolites.
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some forms of life became photosynthetic.
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earth appeared much as it is to this day.
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Aerobic prokaryote was engulfed and began to live and reproduce inside of a larger anerobic prokaryotes. (Endosymbiosis)
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oxygen levels reached todays level.
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Ozone layer formed to protected organisms from harmful UV light.
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Redi tested the priniciple of bigenesis by having an open container with meat inside, and a closed container with meat inside to see if the meat produces maggots.
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Scientist began to use microscopes.
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Spallanzani's experiment tested the spontaneous generation and found out that microorganisms are created by other microorganisms.
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Pasteur developed an experiment that showed biogenesis is true and spontaneous generation was false.
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Oparin develeped a hypothesis about the conditions for formation of organic molecules on early earth.
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Urey and miller formed an experiment to test oparin's hypothesis on all the gases that he thought made up organic compounds.
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Sydney Fox did research and found the physical structures that may have began the rise of the 1st cells.
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invented radiometric dating to find out or establish the age of materials from early earth.
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Lynn Margulis proposed a theory that early prokaryotic cells may have developed a relationship which is endosymbiosis.
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Thomas cech found a RNA in an unicellular eukaryote and acts as a chemical catalysts.
