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
Planet Earth (film) a weekly series set on a post-apocalyptic future Earth. The previous pilot was "Genesis II", and it featured many of the concepts and characters later redeveloped and mostly recast in "Planet Earth". Sets and props from "Genesis II" also found their way into "Planet Earth". A third and final movie, "Strange New World", was aired in 1975. This movie also starred John Saxon as Captain Anthony Vico. In this movie a trio of astronauts returns to Earth after 180 years in suspended animation to locate the underground headquarters of PAX and free the people placed there in suspended animation. None