Hubble Views Dark Spot on Neptune (IMAGE) NASA/Goddard Space Flight Center Caption This new Hubble Space Telescope image confirms the presence of a dark vortex in the atmosphere of Neptune. On the left, the full visible-light image shows a dark vortex near and below a patch of bright clouds in the planet's southern hemisphere. The dark spot measures roughly 3,000 miles across. On the right, Neptune's dark vortices are typically only best seen at blue wavelengths. Credit NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.