Two decades of scrutinizing Saturn are paying off, as scientists have discovered a wave pattern, or oscillation, in Saturn's atmosphere only visible from Earth every 15 years. The discovery of the wave pattern is the result of a 22-year campaign observing Saturn from Earth (the longest study of temperature outside Earth ever recorded), and the Cassini spacecraft's observations of temperature changes in the giant planet's atmosphere over time. The Cassini infrared results, published in Nature, indicate that Saturn's wave pattern is similar to patterns found in Earth's upper atmosphere and on Jupiter. -- JPL Press Release
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