Sun - essay by Isaac Asimov The Weather on the Sun - novelette by Theodore L. Thomas Mercury - essay by Isaac Asimov Brightside Crossing - novelette by Alan E. Nourse Venus - essay by Isaac Asimov Prospector's Special - novelette by Robert Sheckley Earth - essay by Isaac Asimov Waterclap - novelette by Isaac Asimov Mars - essay by Isaac Asimov Hop-Friend - short story by Terry Carr Asteroids - essay by Isaac Asimov Barnacle Bull - short story by Poul Anderson Jupiter - essay by Isaac Asimov Bridge - novelette by James Blish Saturn - essay by Isaac Asimov Saturn Rising - short story by Arthur C. Clarke Uranus - essay by Isaac Asimov The Snowbank Orbit - short story by Fritz Leiber Neptune - essay by Isaac Asimov One Sunday in Neptune - short story by Alexei Panshin Pluto - essay by Isaac Asimov Wait It Out - short story by Larry Niven Nikita Eisenhower Jones - novelette by Robert F. Young Comets - essay by Isaac Asimov The Comet, the Cairn and the Capsule - short story by Duncan Lunan (variant of Comet, Cairn and Capsule) Notes About the Authors (The Science Fictional Solar System) - essay by uncredited