Material thrown up in these eruptions can escape producing the plasma torus at Io's distance from Jupiter. The surface also exhibits some "grooves" which may be the result of a process similar to plate tectonics.
Titan -- is Saturn's largest moon and the only moon in the Solar System with an atmosphere. Composition -- mainly H 2 and He with traces of methane, ammonia, and other gases. One 2009 study found that the United States saw roughly as many record highs as record lows in the 1950s, but by the 2000s there were twice as many record highs as record lows.
Rings of Uranus. The United States government and hundreds of scientific organizations agree that human activities are primarily responsible for global warming. The actual situation is more complex with the outer layers being gaseous and the interior including a region of metallic hydrogen and a small core of heavier elements.
What energy source has powered "volcanoes" on Enceladus remains a mystery as tidal heating appears to be too small. In retrospect, the discovery was actually by chance because the calculations had made assumptions that would not generally be true.
We are now transitioning to a study of gas giant planets, very different from the terrestrial planets in size, density, and composition. Outer edge of Saturn's rings: Or in other words, Jupiter can be modeled as being purely hydrogen.
Suppose that Jupiter is made of hydrogen which is compressed -- what would the density of Jupiter be if it were composed of hydrogen atoms squeezed as tightly together into a cubic crystal lattice as the size of hydrogen atoms in the ground state would allow? So the density of hydrogen with this radius in a cubic lattice is cube root of 2 comes from the geometry of the crystal lattice: Io --closest to Jupiter, is subjected to very large tidal forces which heat its interior which in turn causes volcanic activity.
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This explanation implies that a liquid ocean must lie underneath the icy crust. Jose M. Weather -- Uranus appears nearly featureless, probably because of its lack of an internal energy source and its low temperature causes its clouds to be found at relatively low altitudes and hence veiled by thin, higher level clouds.
Trump might appreciate, weather is how much money you have in your pocket today, whereas climate is your net worth. Ganymede -- largest of the Galilean moons and the largest moon in the Solar System and is larger than Mercury , density suggests that its composition is mainly ices.
The surface has some craters and also regions that appear to have been recently covered by ice. Some have heavily cratered surfaces while others show evidence of re-surfacing, presumably by flows of liquid water, especially Enceladus. The rings around both planets are very narrow and orbital resonances with shepherd satellites are important in maintaining the shapes of the outermost rings.