Stream the full The Planets Season 1 Episode 4 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.
The Planets: While a number of planets are accompanied by moons of all sizes and compositions, only the Earth boasts such a comparatively huge "companion world." What forces could have resulted in this planetary odd couple? Join the search for the answer to one of the solar system's most baffling mysteries, from Cold Warrior scientists racing to be first on the moon, to current theories and remarkable computer-generated visions of the moon's explosive creation.