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Portable Network Graphic  |  1996-04-23  |  22.2 KB  |  488x358  |  8-bit (163 colors)
   ocr: STRUCTURE ATMOSPHERIC COMPOSITION Outer mantle Hydrogen about 94% Inner mantle Helium about 6% Traces of ammonia, methane, and Atmosphere water vapor Core LAYER THICKNESS COMPOSITION Atmosphere Mainly hydrogen and helium gases Outer mantle 25,000 km (15,500 miles) Liquid hydrogen Inner mantle 15,000 km (9,500 miles) Liquid metallic hydrogen Core (radius) 15,000 km (9,500 miles) Rock and ice