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"It's probably a chemical disturbance, in which new hydrocarbon haze particles are created by auroral energetics."
The black dot actually marks the planet's north pole. The anomaly appears to be a smudge of curling clouds discovered above the image of the pole, in essence a mini Great Red Spot (GRS), though apparently invisible in natural Solar light.
These stills, taken from the Cassini animation show the area before the spot manifested (l); at the height of its power (middle); and after it dispersed (r).
Image Credit: Cassini Imaging Central Laboratory for Operations (CICLOPS), Southwest Research Institute, Boulder, CO.
Unexpected dynamics in Jupiter's upper atmosphere, or stratosphere, including the birth and motion of a dark vortex wider than Earth, appear in a movie clip shown here spanning 11 weeks of ultraviolet imaging by the Cassini narrow-angle camera.
Image Credit: Cassini Imaging Central Laboratory for Operations (CICLOPS), Southwest Research Institute, Boulder, CO.
Dan
Space/Science » in reply to Did Jupiter swallow something?...
Re: Hi, Jacob . . .