Solar System
Asteroid Discovery Circumstances
For each minor planet: Where and when found, and by whom.
Exploring The Planets-Discovery
The five known in antiquity, three more since the telescope, and Ceres.
Is Mars Habitable?
A. R. Wallace's 1907 critique of Lowell's Book "Mars and Its Canals"
Orbits and Gravitation
The development of the mathematics of planetary motion.
The Face of the Moon
A catalog for an exhibition of rare books and maps. Includes sample pictures from Galileo to the Apollo missions.
The Planet Mars: A History of Observation and Discovery
On-line version of the book by William Sheehan.
The Struggles to Find the Ninth Planet
A paper by Clyde Tombaugh relating his discovery of Pluto.
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