Bruce Block

This film discusses what had been learned about the planet Mars from Earth-based telescopes, observations from the fly-by Mariner spacecraft, and through the recent Viking landing and orbiter experiments. This film also explains the discoveries and new mysteries relating to the planet most like Earth in our solar system.

This film showcases the flight of the Mariner 10 spacecraft to Venus and Mercury is detailed in animation and photography. It features views of Mercury, as well as an animation on the origin of the solar system. Dr. Bruce C. Murray, director of the Jet Propulsion Laboratory, comments on the mission.