William Sheehan
The Planet Mars
Twenty years after the Viking missions of the '70s, we are finally going back to Mars. No fewer than ten missions are planned for the period between 1996 and 2003, and it is likely that human explorers will follow soon after--perhaps by the middle of the twenty-first century. When they do, they will owe much to the Mars of romance, to ...
Planets and Perception
Telescopic Views and Interpretations, 1609-1909
Discovering Pluto
Exploration at the Edge of the Solar System
In Discovering Pluto, Dale P. Cruikshank and William Sheehan recount the grand story of our unfolding knowledge and exploration of Pluto, its moons, and the outer Solar System. They explain the efforts of scientists, mathematicians, and researchers over the centuries to understand the outer Solar System, leading to the discovery and detailed exploration of Pluto as the premier body in the Kuiper Belt, the so-called third zone of our Solar System.