Neptune’s Small Dark Spot

Neptune’s Small Dark Spot

. Winds swirl around this dark spot in Neptune’s atmosphere, viewed from the Voyager 2 spacecraft in August 1989. Bright, white methane-ice clouds stare out of its center like the pupil of an eye. The spot may be rotating in the cyclonic clockwise direction, opposite to that of the Great Dark Spot on Neptune and the Great Red Spot on Jupiter. If so the material in the dark oval was descending. (Courtesy of NASA and JPL.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University