An "unknown force" declares war against planet Earth when the United Nations disobeys warnings to cease and desist in its attempts at assembling the first satellite in the atmosphere.
as Dave Boyer
as Sybil Carrington
as Dr. Pol Van Ponder
as Cole Hotchkiss
as Jason ibn Akad
as Dr. Howard Lazar
as John Compo
as Brunet Helmsman of Satellite
as Blond Helmsman of Satellite
as Mr. LeMoine
as Jay
as Mitzi
as The President
as Crewman with Gun
as Ground Control (uncredited)