dark spots

Imaging of Jupiter as seen in ultraviolet light. In addition to the Great Red Spot, visible in blue in this image, another oval structure can be seen in the brown haze at Jupiter's south pole. The oval structure, a region of fog concentration, may have been caused by mixing generated in higher vorticity in Jupiter's ionosphere. These dark oval structures also appear in the North Pole, although less frequently. Credit: Troy Tsubota and Michael Wong, University of California - Berkeley.

Magnetic eddies reveal the secrets of Jupiter's poles

New discoveries reveal the fascinating dynamics of Jupiter's magnetic field and atmosphere, with the help of ultraviolet observations from the Hubble telescope