Seen in images from the James Webb Space Telescope, the high-altitude feature may help untangle the inner workings of the giant planet’s atmosphere.
New beauty shots of Jupiter, captured by the James Webb Space Telescope, reveal a speedy jet stream encircling the equator at an altitude never imaged before.
It’s not clear yet what causes the speedy jet. “If you have very intense motions, you need energy to produce those motions,” Hueso says. This energy could come from storms below the jet. It may also be linked to happenings higher in the troposphere, where scientists have observed a band where temperature and wind intensity oscillate over four or so years. Similar cycles over the equator also occur on Saturn and Earth.
The high-resolution images are “stunning,” says Liming Li, a planetary scientist at the University of Houston, also not involved with the study. The researchers used two snapshots of Jupiter taken 10 hours apart. Based on how atmospheric features shifted in that time, the team clocked the stream’s speed.
Zooming in on Jupiter’s equatorial clouds, three bright features appear in this snippet from a July 2022 JWST image. Tracking those features over time let researchers clock the movement of a newly identified jet stream.
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