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New page: A '''Terrestrial Planet''' is a planet with a compact, rocky surface, like the Earth's, and a density greater than 3 grams per cubic cm.<ref>http://www.britannica.com/EBchecked/topic/55300...
A '''Terrestrial Planet''' is a planet with a compact, rocky surface, like the Earth's, and a density greater than 3 grams per cubic cm.<ref>http://www.britannica.com/EBchecked/topic/553008/solar-system/242057/Planets-and-their-moons#ref515542</ref> By comparison, water has a density of 1 gram per cubic cm. They are composed primarily of rock and metal, have a slow rate of rotation, no rings and few satellites.<ref>http://www.nineplanets.org/overview.html</ref>
Within our [[Solar System]] the four innermost planets, [[Mercury]], [[Venus]], [[Earth]] and [[Mars]] are all terrestrial planets.
==References==
{{Reflist}}
[[Category:Planets]]
Within our [[Solar System]] the four innermost planets, [[Mercury]], [[Venus]], [[Earth]] and [[Mars]] are all terrestrial planets.
==References==
{{Reflist}}
[[Category:Planets]]