bright storm system on Neptune

While observing Neptune at dawn with the Keck Telescope, grad student Ned Molter discovered an unusually bright, nearly circular storm system near Neptune’s equator, a region where astronomers have never seen a bright cloud. The center of the storm complex is ~9,000 km across, about 3/4 the size of Earth, or 1/3 of Neptune’s radius. (N. Molter/I. De Pater, UC Berkeley/C. Alvarez, W. M. Keck Observatory)

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