On the Cover: The violent eruption of Mount St. Helens was a deadly reminder of the power of volcanic processes on Earth. Our exploring spacecraft have revealed that volcanism is a relatively common process on the worlds we have visited thus far. Harry Glicken, USGS
3 Volcanism in the Solar System: Michael Carr takes us on a tour of volcanoes throughout the Solar System.
6 A Talk with George Keyworth: Louis Friedmansits down with President Reagan's Science Advisor.
12 Soviets Host International SETI Conferece: Jon Lomberg reports back from the SETI conference, held in Tallinn, Estonia.
10 News & Reviews Telescopes, Voyager, Titan, and Galileo.
11 Society Notes Planetary Society mail and events.
14 Washington Watch The FY1983 NASA budget and its effects on active missions and science.