Saturday, November 9, 2013

The Uranus System in Lowell Was Right!


Uranus is quite cool, with little heat left from gravitational collapse. Minor differences in heating occasionally start weak storm systems in its atmosphere. There is no heating of the surrounding moons except through tidal interactions. None of Uranus’ moons is massive enough to retain a significant atmosphere.


The moon Ariel seems to be an anomaly. It is significantly larger than its small mass would indicate, suggesting a hollowed structure rather than solid. It also has a lower albedo than most moons. This was discovered fairly recently from telescopic observations from the Saturn system.

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