B I O g r a p h i e s
Claudia Alexander
Chris Chyba
Ken Nealson
Andy Cheng
U.S. Project Scientist
Rosetta comet mission
JPL, NASA / Caltech
Carl Sagan Chair for the Study of Life in the Universe SETI Institute & Stanford University
Director, Center for Life Detection
Jet Propulsion Laboratory, NASA/Caltech
Project Scientist, NEAR
Johns Hopkins University / APL, NASA