Structure - Structure Theoretical structure of Pluto...

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Structure Theoretical structure of Pluto (2006) [76] 1. Frozen nitrogen [74] 2. Water ice 3. Rock Observations by the Hubble Space Telescope place Pluto's density at between 1.8 and 2.1 g/cm 3 , suggesting its internal composition consists of roughly 50–70 percent rock and 30–50 percent ice by mass. [77] Because decay of radioactive minerals would eventually heat the ices enough for the rock to separate from them, scientists expect that Pluto's internal structure is differentiated, with the rocky material having settled into a dense core surrounded by a mantle of ice. The diameter of the core should be around 1,700 km, 70% of Pluto's diameter. [76] It is possible that such heating continues today, creating a subsurface ocean layer of liquid water some 100 to 180 km thick at the core–mantle boundary. [76] [78] The DLR Institute of Planetary Research calculated that Pluto's density-to-radius ratio lies in a transition zone, along with Neptune's moon Triton , between icy satellites like the mid-sized
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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Structure - Structure Theoretical structure of Pluto...

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