![](https://webarchive.library.unt.edu/eot2008/20090116023911im_/http://www.nsf.gov/images/x.gif) News From the Field Jupiter's Rocky Core Bigger and Icier, According to New Simulation
![](https://webarchive.library.unt.edu/eot2008/20090116023911im_/http://www.nsf.gov/images/greenlineshort.jpg)
November 25, 2008
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When Jupiter formed 4.5 billion years ago, rocks and ice combined to form a rocky core 14-18 times the mass of the Earth, according to a new simulation by University of California, Berkeley geophysicist Burkhard Militzer. This is twice what previous models predicted. Militzer employed a simulation technique designed to model the properties of semiconductors and now used for nanomaterials. This simulation also predicts fewer areas of ice throughout the rest of the atmosphere.
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Source University of California - Berkeley
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