Target... Earth?

Victor Buono

Homer The Archivist

Rick Overton

Ino The Computer (voice)

칼 세이건

Self

아이작 아시모프

Self

Eugene Cernan

Self (archive footage)

Bernard J. Carr

Self (as Dr. Bernard Carr)

Frank Drake

Self (as Dr. Frank Drake)

Ronald E. Evans

Self (archive footage)