Five billion years ago the solar system was a swirling mass of gas and dust and begins to form. The sun began to form a few million years later too. The sun was a energy source to all life that would happen.
4.6 BYA Earth Formation
Earth grew larger as gravity pulled in more debris.
4 BYA Volcanoes Brings Life
The estimated age of Earth is about 700,000 times as long as the period of history recorded. Also, the oldest known rocks and crystals are 4 billion years old. Volcanoes erruptions formed gas making the atmosphere.
4 BYA Organic Molecules
Organic molecules began to accumulate.
3.5 BYA Fossil
Fossils of layered structures called stormatolites (made from lynbgya cells).
3 BYA Plant Life
Some forms of life had become photosynthetic. This shows that life could now live on the planet and was the beginning to bigger things.
2.2 BYA Earth
Earth probably appeared much as it is today.
2 BYA Oxygen Neutralizes
O2 levels reached today's levels.
1.5 BYA Life Formed
A type of small aerobic prokaryote was engulfed by and began to live. It reproduce inside of a larger anaerobic prokaryote.
1 BYA Ozone Creation
Ozone (O3) formed -protected organism from harmful Uv rays so they could exist on land
1600's Redi's Experiment and The First Microscope
Redi described and noticed the different development forms of flies.
The first microscope in 1665 Roebert Hooke studied the nature with light micoscope.
1700's Spallanzni's Experiment
Spallanzani's bailed fresh clear broth left one open (cloudy) and one closed.
1800's Pasteur's Experiment
Pasteurs curved the neck of the flask proving microorganism are in the air.
1900's to Present. Radiometric dating
Radiometric dating was developed in 1949 by J.R Arnold and W.F Libby. Radiometric dating tells you how old things are so it can help discover when things lived.
1900's-Present Urey and Miller, Oparin's Hypothesis, Fox,Cech, and Marguis
Urey and Miller used Oparin's hypothesis to produce a variety of organic compound including amino acids.
Oparin's hypothesis high tempertures make high tempertures making simple organic compounds
Fox did research on the physical structures that may have given rise to the 1st cells.
Cech discovered that types pf RNA is able to acrt as a chemical catalyst.
Margulis discovered early prokaryotic cells might have developed a mutually beneficial relationship.
Radiomaetric dating was developed in 1949