Physics 202: Introduction to Astronomy

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Physics 202 Introduction to Astronomy Lecture
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• Carsten Denker
• Physics Department
• Center for SolarTerrestrial Research

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(No Transcript)
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Cosmic Evolution
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Life in the Universe

• Life in the universe
• Life in the solar system
• Life on Earth
• Miller-Urey experiment
• Alternative biochemistries
• Interstellar origin
• Diversity and culture

• Intelligent life?
• Drake equation
• Search for extraterrestrial intelligence
• The Water Hole

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Chemical Evolution
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Drake Equation

• R Rate of star formation
• fp Fraction of stars with
  planetary systems
• ne Number of habitable planets
  per planetary system
• fl Fraction of planets on which
  life arises
• fi Fraction of life-bearing planets on which
  intelligence arises
• fc Fraction of planets on which intelligent life
  develops and uses technology
• L Average lifetime of a technological
  civilization

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Habitable Zones
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Anybody out there?