Astronomy 330

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...