Warning from Space or Mysterious Satellite (宇宙人東京に現わる, Uchūjin Tokyo ni arawaru, Spacemen Appear in Tokyo) is a Japanese science fiction tokusatsu film released in January 1956 by Daiei, and was the first Japanese science fiction film to be produced in color. In the film's plot, starfish-like aliens disguised as humans travel to Earth to warn of the imminent collision of a rogue planet and Earth.