November 24, 2014  |  By  | 

Inner Planets The inner Planets are small and dense and have rocky surfaces Also known as terrestrial planets. Filled with volcanoes, oceans, heat hot enough to melt lead, and atmospheres leaking into space Mercury Closest planet to the sun. Surface is full of craters and plains. Little atmosphere - Leaks off into space. Temperature extremes. 430 celsius during a day ­170º Celsius at night  ●Made of the dense metal iron.  ●Weak gravity      45   4  < >  5  <­probe­mercury­space/mercury­spacecraft­ > 

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