NASA scientists are studying planet magnetic fields and revisited raw data collected by Voyager 2 over three decades ago. They found that
Voyager 2 spotted a massive magnetic bubble pulling gas out of Uranus’ atmosphere.
https://www.space.com/uranus-gas-blob-voyager-2-discovery.html
Such loop-like plasmoids are typically formed as a spinning planet flings bits of its atmosphere to space. “Centrifugal forces take over, and the plasmoid pinches off.”
https://voyager.jpl.nasa.gov/news/details.php?article_id=119
Uranus pinches off big blobs and flings them.
Tacky Raccoons 