Carl Sagan
Himself (archive footage)
Acting
John Casani
Himself
Acting
Lawrence Krauss
Himself
Acting
Carolyn Porco
Herself
Acting
Timothy Ferris
Himself
Acting
Edward Stone
Himself
Acting
Nick Sagan
Himself
Writing
Larry Soderblom
Himself
Acting
Charley Kohlhase
Himself
Acting
Fran Bagenal
Herself
Acting
James F. Bell
Himself
Acting
Frank Locatell
Himself
Acting
Suzanne Dodd
Herself
Acting
Jon Lomberg
Himself
Acting
Heidi Hammel
Herself
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
Himself
Acting
Frank Drake
Self
Acting