Volume 1, number 4
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(Planetary Society members only)
3 Deep Space Exploration and the Space Shuttle: James D. Burke looks toward the future upon the succesfful first flight of the orbiter Columbia.
4 Solar Sailing: A Frontier Transportation System: Chauney Uphoff explains this exciting technology.
6 The Special Case of Galileo Galilei: Maureen Miller recounts the cases of Galileo vs. the Catholic Church—in both 1980 and the 17th century.
8 Ice Worlds: Michael Malin takes us on a tour of icy moons in the outer solar system.
13 Giant Landslides in the Mariner Valley on Mars: Conway Snyder reports on these striking features.
11 Washington Watch New faces at NASA; Halley's Comet.
12 News & Reviews Meteorites from the Moon and beyond.
14 Society Notes The Search for Extraterrestrial Intelligence (SETI); book sales.