Double planet the four, small, outer satellites of Pluto. A now-abandoned hypothesis for the origin of the Moon was actually called the "double-planet hypothesis"; the idea was that the Earth and the Moon formed in the same region of the solar system's proto-planetary disk, forming a system under gravitational interaction. This idea, too, is a problematic condition for defining two bodies as "double planets" because planets can "capture" moons through gravitational interaction. For example, the moons of Mars (Phobos and Deimos) are thought to be asteroids captured long ago by Mars. Such a weak definition would also deem Neptune-Triton a double planet,
Crash of the Moons Crash of the Moons Crash of the Moons is a 75-minute 1954 American science fiction film, consisting of three consecutive episodes of the television series "Rocky Jones, Space Ranger", which constituted a complete story. It was released only on 16mm for home movie rental and television syndication. It was directed by Hollingsworth Morse. This film is currently in the Public Domain. Rocky Jones attempts to save the inhabitants of Ophiuchus (pronounced "officious" in the film), a planet about to collide with a moon. However, Cleolanta - the empress of the planet - is suspicious. While Rocky and his crew succeed