FAINT EARLY SUN PARADOX - Earth 2 Thursday, February 18th,...

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Thursday, February 18th, 1999 Announcements: Lecture notes: Our planet has been stable for billions of years. When broken down into different time frames, we can see how different the earth used to be. Tens of thousands of years ago the earth's system was very sensitive to something. The earth was affected by very abrupt changes. Many lessons can be learned from looking at the past. FAINT EARLY SUN PARADOX This implies that the universe was formed about 15 million years ago. ..Hydrogen & Water Vapor escape forming crust. This occurred fairly early on because of bombing, heating, and segregation. This occurred early in the 4.6 billion years because we have an atmosphere and an ocean. SOLAR EVOLUTION When the sun's temperature < 50 C. ..Hydrogen fuses --> Helium. This fusion process creates energy. 4H --> 1 Helium + Energy. This creates a star with fewer particles and
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This note was uploaded on 02/21/2008 for the course EARTH 002 taught by Professor Eigenbrode during the Spring '99 term at Pennsylvania State University, University Park.

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FAINT EARLY SUN PARADOX - Earth 2 Thursday, February 18th,...

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