Link to the Show / Show NotesNeil deGrasse Tyson is the host of NOVA scienceNOW, an astrophysicist, and the director of the Museum of Natural History's Hayden Planetarium. Rusty Schweiker is a former astronaut on Apollo missions.Audio editing on this podcast is by David Levin. Major funding for NOVA scienceNOW is provided by the National Science Foundation and the Howard Hughes Medical Institute. Additional funding is provided by the Alfred P. Sloan and Kavli Foundations. Special funding for NOVA podcasts is provided by the MacArthur Foundation.Visit us online at http://www.pbs.org/nova/sciencenow

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