Cast:
Carl Sagan, John Casani, Lawrence Krauss, Carolyn Porco, Timothy Ferris, Edward Stone, Nick Sagan, Larry Soderblom, Charley Kohlhase, Fran Bagenal, James F. Bell, Frank Locatell, Suzanne Dodd, Jon Lomberg, Heidi Hammel, Candy Hansen, Andrew Ingersoll, Dave Linick, Fernando Peralta, Linda J. Spilker, Tom Spilker, Janet Sternberg, Amahl Drake, Don Gurnett, Stamatios Krimigis, Linda Morabito, Bradford A. Smith, Richard John Terrile, Frank Drake
