Our planetary system is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star (the Sun) and everything to be around by gravity including the planets, dwarf planets, dozens of moons and millions of asteroids, comets and meteoroids. The inner, rocky planets are Mercury, Venus, Earth and Mars. This research try to study the terrestrial planets and moon of the Earth (lunar) and a number of geophysical missions that try to investigate these planets. Missions under investigation are: Messenger and Mariner 10 missions for Mercury; Pioneer Venus (1 and 2), Venera (15 and 16) and Magellan missions for Venus; Apollo, Luna, Chandarayaan_1, LRO, Lunar Prospector, Kaguya and GRAIL missions for the Moon; Mariner 9, MGS, MRO and InSight missions for Mars. The topographic, gravity and magnetic data obtained from these missions were used to investigate the internal structure and geological evolution of these planets, so this study to do examine the results and their applications.