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
The Man from Planet X moor. Meanwhile, the scientist only wants to exploit the spaceman's specialized knowledge for his own selfish ends. A spaceship from a previously unknown planet lands in the Scottish moors, bringing a humanoid alien to Earth near the observatory of Professor Elliot (Raymond Bond), just days before the mysterious Planet X will pass closest to our planet. When the professor and his friend, American reporter John Lawrence (Robert Clarke), discover the spaceman, they help it when it is in distress and try to communicate with it, failing in their attempt. They leave, and the alien follows them. A colleague of the