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Astronomy 330:
Extraterrestrial Life
TR 9:30-10:50 RAL 116
Robert J. Brunner Phone: 244-6099 Email: bigdog@1illinois . edu Office: Astro Building #226 Office Hours: W 10:30 - 11:30 or by appointment or email
This class (Lecture 1): Search for ET Life Next Class: Introductory Astronomy
https://compass2g.illinois.edu/
ASTR 330: Extraterrestrial Life
ASTR 330: Lecture 1
2
January 15, 2013
Are we alone?
ASTR 330: Lecture 1
3
January 15, 2013
Are we alone?
a) No, the Universe is teeming with Life! b) No, there is life in the Universe, but it is rare. c) Yes, there is no evidence of life elsewhere. d) We do not know, but it seem unlikely. e) We do not know, but it seems reasonable. iClicker
ASTR 330: Lecture 1 4 January 15, 2013
UFO #1
ASTR 330: Lecture 1
5
January 15, 2013
UFO #2
ASTR 330: Lecture 1
6
January 15, 2013
UFO #3
ASTR 330: Lecture 1
7
January 15, 2013
Popular Culture
ASTR 330: Lecture 1
8
January 15, 2013
Are we alone?
a) No, the Universe is teeming with Life! b) No, there is life in the Universe, but it is rare. c) Yes, there is no evidence of life elsewhere. d) We do not know, but it seem unlikely. e) We do not know, but it seems reasonable. iClicker
ASTR 330: Lecture 1 9 January 15, 2013
Are we alone?
What do you think? Why?
ASTR 330: Lecture 1 10 January 15, 2013
Are we alone?
How can we address this question in a scientific manner?
Drake Equation
Frank Drake
N = R* × fp × ne × fl × fi × fc × L
# of advanced civilizations we can contact in our Galaxy today Star formation rate # of Fraction of Fraction Earthlike Fraction Fraction that Lifetime of stars with that planets per on which evolve advanced planets communsystem life arises intelligence civilizations icate
stars/ yr
systems/ planets/ life/ star system planet
11
intel./ life
comm./ yrs/ comm. intel.
January 15, 2013
ASTR 330: Lecture 1
Course Outline
ic A Bas...