Claim: Venus is one of the four terrestrial bodies.

A terrestrial planet , telluric planet , or rocky planet is a planet that is composed primarily of silicate rocks or metals . Within the Solar System , the terrestrial planets are the inner planets closest to the Sun , i.e. Mercury , Venus , Earth , and Mars . The terms `` terrestrial planet '' and `` telluric planet '' are derived from Latin words for Earth -LRB- Terra and Tellus -RRB- , as these planets are , in terms of composition , `` Earth-like '' .   Terrestrial planets have a solid planetary surface , making them substantially different from the larger giant planets , which are composed mostly of some combination of hydrogen , helium , and water existing in various physical states .