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(5BYA) Solar System
Soloar System began to form, and before that it was a swirling mass of gas and dust. -
(4.6 BYA) The Earth
The earth began to form by colliding with spare debris. -
(4 BYA) Organic molecules
Organic molecules began to accumlate oldest rocks and crystals about 4 BYA -
(4 BYA) Archaea
Archaea are thought to be smilar to the the type of cellular life that first populated earth -
(3.5 BYA) Fossils
Fossils of stromatolites are known. -
(3 BYA) Forms of Life
Forms of life had beocome photosyntheic. -
(2.2 BYA) Earth
Earth probably appeared much as it does today. -
(2 BYA) Prokaryote
The prokayote that was engulfed reporduced inside of a larger, anaerobic prokaryote. -
(1.5 BYA) Prokayote
A small aerobic prokayote was engulfed. -
(1600-1700) Microscope
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 -
(1700-1800) Spallazani
Spallazani one of the first to disprove spontaneous generation. An italian scientist who proved microoganism could be killed by boiling-1767. -
(1800-1900) Fox
Fox did extended research physical structures that may have formed the first cells. Pasteur's experiment-1895 microorganisms were carried by dust not air. -
(1900-Present) Lynn
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.
