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Line 75: − Jupiter, as mentioned above, is radiating heat at 1.7 times the rate that it receives it from the [[Sun]]. That this heat flux could be solely due to Jupiter losing the heat of its formation as a planet 4.6 billion years ago begs explanation.
removed erroneous explanation - Kelvin-Helmholtz gravitational compression as described in this article explains Jupiter's thermal radiation
=== Radiation of heat ===
=== Radiation of heat ===
Jupiter actually radiates 1.7 times the heat that strikes it from the Sun.<ref name=Weisstein>Weisstein, Eric W. "[http://scienceworld.wolfram.com/astronomy/Jupiter.html Jupiter]." ''Eric Weisstein's World of Astronomy'', accessed March 3, 2008.</ref> This could be due to Kelvin-Helmholtz gravitational compression, a process that also limits the size that Jupiter can have.<ref name=arnett/>
Jupiter actually radiates 1.7 times the heat that strikes it from the Sun.<ref name=Weisstein>Weisstein, Eric W. "[http://scienceworld.wolfram.com/astronomy/Jupiter.html Jupiter]." ''Eric Weisstein's World of Astronomy'', accessed March 3, 2008.</ref> This could be due to Kelvin-Helmholtz gravitational compression, a process that also limits the size that Jupiter can have.<ref name=arnett/> In this process, the planet's cooling causes it to compress, which in turn heats up Jupiter's core.
== Magnetosphere ==
== Magnetosphere ==
== Problems for uniformitarian theories ==
== Problems for uniformitarian theories ==
Jupiter's sidereal day is less than ten Earth hours long. If Jupiter formed simply as an accretion aggregate of the [[nebula hypothesis|solar nebula]], then it should not have acquired such tremendous angular momentum. The problem involves not merely the short sidereal day but also Jupiter's tremendous mass.
Jupiter's sidereal day is less than ten Earth hours long. If Jupiter formed simply as an accretion aggregate of the [[nebula hypothesis|solar nebula]], then it should not have acquired such tremendous angular momentum. The problem involves not merely the short sidereal day but also Jupiter's tremendous mass.