Snoopy nello spazio: I segreti dell'Apollo 10

Jeff Goldblum

Self

Ron Howard

Self

Ginger Kerrick

Self

Wes Chesser

Self

Gene Cernan

Self

Sean Cullen

Peppy Announcer (voice)

Terry McGurrin

Snoopy (voice)

Ethan Pugiotto

Charlie Brown (voice)

Wyatt White

Linus (voice)

Isabella Leo

Lucy (voice)

Charles M. Schulz

Self (archive footage)