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This Island Earth
- År: 1955
- Land: United States of America
- Genre: Sci-fi, Eventyr, Gyser
- Studio: Universal Pictures
- Nøgleord: spacecraft, flying saucer, extraterrestrial technology, mutant, nobel prize, space travel, georgia, resettlement, alien, nuclear scientist, space, scientist, death ray, interplanetary war
- Direktør: Joseph M. Newman
- Cast: Rex Reason, Faith Domergue, Jeff Morrow, Lance Fuller, Robert Nichols, Russell Johnson