Volcanology of Mars through the crust to produce volcanic mountains. However, the largest volcano on the planet, Olympus Mons, is thought to have formed when the plates were not moving. Olympus Mons may have formed just after the plate motion stopped. The mare-like plains on Mars are roughly 3 to 3.5 billion years old. The giant shield volcanoes are younger, formed between 1 and 2 billion years ago. Olympus Mons may be "as young as 200 million years." Norman H. Sleep, professor of geophysics at Stanford University, described how the three volcanoes that form a line along the Tharsis Ridge may be extinct
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