The North of Saturn

The north of Saturn from Cassini.  Image: NASA/JPL-Caltech/Space Science Institute
The north of Saturn from Cassini. Image: NASA/JPL-Caltech/Space Science Institute

A great image of Saturn from the Cassini spacecraft. Click the image above to see some of the detail in the atmosphere. Saturn’s atmospheric zones resemble the ones on Jupiter but thanks to lower surface gravity the clouds are more spread out, so are less defined. Saturn’s atmosphere is also colder than Jupiter as you might expect.

Like Jupiter, Saturn radiates more energy into space than it receives from the sun. What you might not expect is when size is taken into account, Saturn radiates more energy into space from its interior than Jupiter – by about 25 percent.

NASA calls this release The Ring King and for good reason:

Saturn reigns supreme, encircled by its retinue of rings. Although all four giant planets have ring systems, Saturn’s is by far the most massive and impressive. Scientists are trying to understand why by studying how the rings have formed and how they have evolved over time. Also seen in this image is Saturn’s famous north polar vortex and hexagon. This view looks toward the sunlit side of the rings from about 37 degrees above the ringplane. The image was taken with the Cassini spacecraft wide-angle camera on May 4, 2014 using a spectral filter which preferentially admits wavelengths of near-infrared light centered at 752 nanometers. The view was acquired at a distance of approximately 2 million miles (3 million kilometers) from Saturn. Image scale is 110 miles (180 kilometers) per pixel. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA’s Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.

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