(from the article `planet`) Of the eight currently recognized planets of the solar system, the inner four, from Mercury to Mars, are called terrestrial planets; those from ... ...where the terrestrial planets—Mercury, Venus, Earth, and Mars—reside, the distance between successive planets is relatively small in comparison ... ...
Found on
http://www.britannica.com/eb/a-z/g/29
A planet that is much larger and more massive than Earth. In practical terms, this probably means that all giant planets are gas giants, since it is hard to see how an exclusively rock-metal planet could acquire enough material in a protoplanetary nebula to take on such huge proportions.
Found on
http://www.daviddarling.info/encyclopedia/G/giant_planet.html
No exact match found.
