ASTRO-110 Lecture Notes - Lecture 31: Solar Wind, Tidal Force, Metallic Hydrogen
9 Oct 2020
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Made mostly of hydrogen, helium, and hydrogen compounds. Differ primarily in their relative proportions of hydrogen compounds. Uranus and neptune are the smallest of the four and are made primarily of hydrogen compounds such as. These planets are formed in the outer solar system. Roughly 10 times the mass of earth. Took longer to form and captured less hydrogen and helium gas. More distant planets have less time to capture gas and ended up smaller in size. Massive planets are affected by their own gravity. Extra mass of jupiter compresses its interior to a much higher density. High pressures in the interiors compress materials to different forms. High pressures turn hydrogen into a liquid form. All four jovian planets have cores of about the same mass. Internal pressures never become high enough to form liquid or metallic hydrogen in. Have global magnetic fields generate by motions of charged particles in their interiors.
