

"Life magazine says - "The ultimate in scientific monsters""
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.
Dave Boyer

Sybil Carrington

Dr. Pol Van Ponder

Cole Hotchkiss

Jason ibn Akad

Dr. Howard Lazar

John Compo

Brunet Helmsman of Satellite

Blond Helmsman of Satellite
Mr. LeMoine

Jay
Mitzi

The President

Crewman with Gun

Reporter
Ground Control (uncredited)

Technician (uncredited)
Reporter (uncredited)
Reporter (uncredited)