Chapter1. The Planets of the Sun -- Chapter2. Launch Vehicles for Planetary Spacecraft -- Chapter3. Soviet Union Spacecraft that Explored Venus 1960-1961 -- Chapter4. U.S. Spacecraft that Explored Venus 1960-1980 -- Chapter5. Soviet Union Spacecraft that Explored Venus 1980-1990 -- Chapter6. U.S. Magellan Spacecraft that Explored Venus 1980-2020 -- Chapter7. U.S. Spacecraft that Explored Mercury: Mariner 10 and Messenger -- Chapter8. Japanese and European Space Agency Spacecraft that Explored Venus 2005-2020 Index.