Labels:book | sky | web site OCR: Acknowledgemenfs Star catalog: European Space Agency 1997. The Hipparcos and Tycho Catalogs ESA SP. 1200 http: //astro estec esa .nl/Hipparcos/hipparcos html Surface maps of planets and moons by courtesy of US Geol logical Survey and NASA Venus surface map by kind permission NASA and University London Depar tment of Astronomy Video of Yenus surface by cour tesy of NASA Formation of the Moon Simulation courtesy of the Smithsonian Astrophysi ical Observatory Image of Galileo manuscript by kind permission of the Special Collections Library University of Michigan Theory of Motion of Jupiter' Galilean Satellites HC Lieske 1977 Astron Astrophysics New theory of motion of the satellites of Mars from data of the Phobos space program N.M. Ivanoy Yu.F. Kolyuka S.M. Kudraytsey et.al. 1990 Dokl. Akad ...