Number 46 (Story #4), September 6, 1991 by Phillip F. Schewe and Ben Stein A LANDSLIDE ON VENUS is evident in pictures taken before and after the event by the Magellan spacecraft. Project scientists believe that a quake may have caused a high cliff in the Aphrodite Terra region to collapse, creating a five-mile-long flow of material. Magellan has also discovered a 4200-mile-long channel on Venus, the largest such feature known in the solar system. (The New York Times, 31 August 1991.)