Physics 202: Introduction to Astronomy – Lecture 24 Carsten Denker Physics Department Center for Solar–Terrestrial Research.

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Physics 202: Introduction to Astronomy – Lecture 24 Carsten Denker Physics Department Center for Solar–Terrestrial Research

May 2, 2006Center for Solar-Terrestrial Research

May 2, 2006Center for Solar-Terrestrial Research Cosmic Evolution

May 2, 2006Center 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”

May 2, 2006Center for Solar-Terrestrial Research Chemical Evolution

May 2, 2006Center for Solar-Terrestrial Research Drake Equation  R * : Rate of star formation  f p : Fraction of stars with planetary systems  n e : Number of habitable planets per planetary system  f l : Fraction of planets on which life arises  f i : Fraction of life-bearing planets on which intelligence arises  f c : Fraction of planets on which intelligent life develops and uses technology  L: Average lifetime of a technological civilization

May 2, 2006Center for Solar-Terrestrial Research Habitable Zones

May 2, 2006Center for Solar-Terrestrial Research Anybody out there?

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