Physics 202 introduction to astronomy lecture 24
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Physics 202: Introduction to Astronomy – Lecture 24 PowerPoint PPT Presentation


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Physics 202: Introduction to Astronomy – Lecture 24. Carsten Denker Physics Department Center for Solar–Terrestrial Research. Cosmic Evolution. Life in the universe Life in the solar system Life on Earth Miller-Urey experiment Alternative biochemistries Interstellar origin

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Physics 202: Introduction to Astronomy – Lecture 24

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Physics 202 introduction to astronomy lecture 24

Physics 202: Introduction to Astronomy – Lecture 24

Carsten Denker

Physics Department

Center for Solar–Terrestrial Research


Physics 202 introduction to astronomy lecture 24

Center for Solar-Terrestrial Research


Cosmic evolution

Cosmic Evolution

Center for Solar-Terrestrial Research


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”

Life in the Universe

Center for Solar-Terrestrial Research


Chemical evolution

Chemical Evolution

Center for Solar-Terrestrial Research


Drake equation

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

Center for Solar-Terrestrial Research


Habitable zones

Habitable Zones

Center for Solar-Terrestrial Research


Anybody out there

Anybody out there?

Center for Solar-Terrestrial Research


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