Earth Sciences 1086F/G Lecture Notes - Lecture 5: Gas Giant
15 Apr 2016
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Also known as the jovian planets (after jupiter) or the ice giants. Gas giant planet: a large, low-density planet composed primarily of hydrogen, helium, methane, and ammonia in either gaseous or liquid state. On uranus and neptune there may actually be a sharp bounding surface between gas and liquid: all have very hot cores: perhaps 20,000 k for jupiter and saturn and 7,000 k for. Jupiter rotates fastest, this has the most prominent bands. In 2007 scientists announced that all gas giants either form within the rst 10 million years of the development of the star-planet system or they don"t ever develop. The combined gravitational/rotational interactions would have the effect of lining the smaller ones ether out to the margins of the planetary systems or in toward the central star. It is during this period that the planets adjusted their orbits to the relatively stable sequence which now exists. 1994 fragments from a disrupted comet smashed into jupiter.
