Carl Sagan
Self (archive footage)
Acting
John Casani
Self
Acting
Lawrence Krauss
Self
Acting
Carolyn Porco
Self
Acting
Timothy Ferris
Self
Acting
Edward Stone
Self
Acting
Nick Sagan
Self
Writing
Larry Soderblom
Self
Acting
Charley Kohlhase
Self
Acting
Fran Bagenal
Self
Acting
James F. Bell
Self
Acting
Frank Locatell
Self
Acting
Suzanne Dodd
Self
Acting
Jon Lomberg
Self
Acting
Heidi Hammel
Self
Acting
Candy Hansen
Herself
Acting
Andrew Ingersoll
Himself
Acting
Dave Linick
Himself
Acting
Fernando Peralta
Himself
Acting
Linda J. Spilker
Herself
Acting
Tom Spilker
Himself
Acting
Janet Sternberg
Herself
Acting
Amahl Drake
Herself
Acting
Don Gurnett
Himself
Acting
Stamatios Krimigis
Himself
Acting
Linda Morabito
Herself
Acting
Bradford A. Smith
Self - Imaging Science Team Leader
Acting
Richard John Terrile
Self
Acting
Frank Drake
Self
Acting