Terrestrial planet Terrestrial planet 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 ("Terra" and "Tellus"), as these planets are, in terms of structure, "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
Third from the Sun have been waiting in the car, watch as Carling orders them out. Jody suddenly throws the car's door open, knocking the gun from Carling's hand and giving the men enough time to overpower him. The group rushes into the ship, fighting off the guards that rush them. Later that evening, the group has safely escaped their doomed planet and are on course. Sturka comments that he cannot believe that there is a planet full of people like themselves. Riden smiles as he points out on the ship's viewer their mysterious destination, 11 million miles away—the third planet from the Sun,