Saturn
Beginning of paper
orbits the Sun at a mean distance of 1.427 billion km with a
period of 29.4577 tropical years. The orbit is inclined 2.49 degrees to
the ecliptic, or Earth orbital, plane and has an eccentricity of 0.0556.
At 's distance from the Sun, it receives only 0.01 of the unit solar
radiation flux that the ....
Middle of paper
.... their large size, low density, and corresponding extensive atmospheres.
Current models of the interior indicate that below the relatively thin
opaque cloud layer is an extensive, clear hydrogen-helium atmosphere. Data
on the internal heat flux, the detailed gravity field, and the observed
upper-atmosphere hydrogen-helium ratio satisfy a model of the interior
where the ratio of hydrogen to helium decreases with depth. The gas
density gradually increases downward and the gas transforms into ....
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