AST251H1 Lecture Notes - Lecture 7: Escape Velocity, Panspermia, Lightning
29 Jan 2018
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Document Summary
The earth is 5 billion years old, the earliest stretches of life reach back to 4 billlion years old. We see that life is adbunant and very diverse. They had a gas with the beginning elements of life, and they ran a current through it to see if they could create. If we run the reducing agents through the mechanism. They picked these atoms because these atoms were in the atmospheres of the other planets. When the sun was young, there would be more frequrnt and strong solar flares. The earths rotation is getting slower, so our days are getting longer. In the early earth the atmosphere would have had more electrical charge via lightning. After 1 week, this atmosphere produced amino acids. Aftwe 1 week it went from methane to the building blocks of life. No because whateve h in the atmosphere would be lost very quickly because of its low escape velocity.
