The Observer's Guide to Planetary Motion: Explaining the Cycles of the Night Sky by Dominic Ford
English | 2014 | ISBN-10: 1493906283 | 240 pages | PDF | 6 MB
To the naked eye, the most evident defining feature of the planets is their motion across the night sky. It was this motion that allowed ancient civilizations to single them out as different from fixed stars. “The Observer’s Guide to Planetary Motion” takes each planet and its moons (if it has them) in turn and describes how the geometry of the Solar System gives rise to its observed motions.