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Soloar System began to form, and before that it was a swirling mass of gas and dust.
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The earth began to form by colliding with spare debris.
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Organic molecules began to accumlate oldest rocks and crystals about 4 BYA
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Archaea are thought to be smilar to the the type of cellular life that first populated earth
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Fossils of stromatolites are known.
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Forms of life had beocome photosyntheic.
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Earth probably appeared much as it does today.
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The prokayote that was engulfed reporduced inside of a larger, anaerobic prokaryote.
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A small aerobic prokayote was engulfed.
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First microscope was made in 1609. Redis experiment by keeping 2 jars of open and one was closed to see if a fly came out of the meat- 1668
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Spallazani one of the first to disprove spontaneous generation. An italian scientist who proved microoganism could be killed by boiling-1767.
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Fox did extended research physical structures that may have formed the first cells. Pasteur's experiment-1895 microorganisms were carried by dust not air.
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Lynn Margulis theory on he origin of eukaryotic organelles and her contributions to the endesymbictec theory. 1930- opar in hypothesis was that the atmosphere of early earth was largely of carbon dioxide, nitrogen and water vapor. Thomas cech discovery of the cataytic properties of RNA. 1912- urey and miller stimulated hypothetical condtions though at the time to present on the early earth. Radiometric dating is technique used to date things, such as rocks.
