Hubble Image of Neptune's New Spot (IMAGE) NASA/Goddard Space Flight Center Caption The smaller dark spot in this Hubble image may have been a piece of the giant storm that broke off as the larger vortex approached the equator. Hubble uncovered the giant storm in September 2018 in Neptune's northern hemisphere. The large feature is roughly 4,600 miles across. The estimated width of the smaller spot is 3,900 miles. Credit NASA, ESA, STScI, M.H. Wong (University of California, Berkeley), and L.A. Sromovsky and P.M. Fry (University of Wisconsin-Madison) 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.