These Earth-size ovals at Jupiter’s north and south poles are visible only at ultraviolet (UV) wavelengths, and appear and disappear seemingly at random, according to a study led by astronomers from the University of California, Berkeley. A false-color ultraviolet image of the entire planet, showing the hood or cap of hydrocarbon haze that covers the south pole; the edge of the north polar hood is visible at the top. Image credit: Troy Tsubota &...
