In the main image, above, the blue region denotes warm temperatures, with a massive cyclone—as observed in-situ by Cassini. However, what the scientists were able to tell is that the temperatures and gases in Saturn’s stratosphere right now differ to what Cassini saw in the planet’s northern winter and spring.So sensitive to light is Webb that it had to be pointed at only tiny parts of Saturn at any one time to prevent its detectors from being overwhelmed.
“The quality of the new data from JWST is simply breathtaking,” said Professor Leigh Fletcher at the University of Leicester School of Physics and Astronomy in the U.K., who helped design these observations eight years ago. “In one short set of observations we’ve been able to continue the legacy of the Cassini mission into a completely new Saturnian season, watching how the weather patterns and atmospheric circulation respond to the changing sunlight.
This work on Saturn is just the first of a program of observations of all four giant planets. “If we can get so many new findings from a single observation of a single world, imagine what discoveries await,” said Fletcher.
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