Are We Alone - Off to the Traces
If a tree fell on another planet, would we be able to detect it? Not quite yet – but we might be able to tell if the planet was habitable. A living-planet is the promise of newly-discovered Gliese 581g. But does the planet exist at all?
Discover how we learn a planet’s geology and chemistry from afar. Also, what we learn about a civilization from what it discards, beginning with our own sloppy habits.
Plus, the hunt for derelict alien spaceships… and a man who sketches alien creatures for a living – based on real science.
Guests:
- Lisa Kaltenegger – Astronomer, Harvard-Smithsonian Center for Astrophysics
- Brad Bebout – Biologist, NASA Ames Research Center
- Robin Nagle – Anthropologist, New York University
- Robin Hanson – Economist, George Mason University
- Joel Hagen – Computer graphics instructor, Modesto Junior College
Permalink: http://radio.seti.org/episodes/Off_to_the_Traces
You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Are We A Blog?, the companion blog to the radio show.
And be sure to check out the Are We Alone iPhone/iPad app: http://itunes.apple.com/us/app/are-we-alone-make-contact/id374968004?mt=8
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