Tag Archives: USA ONLY

Exploration of the Planets (1970)

The solar system consists of the Sun and the other celestial objects gravitationally bound to it: the eight planets, their 166 known moons,three dwarf planets (Ceres, Pluto, and Eris and their four known moons), and billions of small bodies. This last category includes asteroids, Kuiper belt objects, comets, meteoroids, and interplanetary dust.