Off to the Traces

Categories: Earth

If a tree feel 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.


  • 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

Descripción en español