Word: cloudtop
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Cassini will use an elaborate suite of instruments to determine why all this meteorological hubbub is taking place on a planet that is so cold--with cloudtop temperatures of --218°F--that it shouldn't be able to cook up much weather. The best guess is that internal heat left over from the gravitational collapse that formed the planet in the first place is keeping things warm. Cassini will deploy its cameras, infrared sensors, chemical spectrographs and more to deconstruct the planet's atmosphere and find out for sure. Other instruments will map the planet's magnetosphere and gravitational...
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