A Hubble Space Telescope view of Jupiter, taken on June 27, 2019, shows the Great Red Spot in intense color. NASA, ESA, A. Simon (Goddard Space Flight Center) and M.H. Wong (University of California, Berkeley) NASA's Hubble Space Telescope has been observing Jupiter's Great Red Spot since 2009. In that decade, winds in the cyclone's outer band have sped up, while its inner regions have slowed. Scientists aren't sure what the changing winds mean for the Great Red Spot, which is shrinking. See more stories on Insider's business page. NASA's most powerful space telescope, Hubble, has documented a mysterious change in Jupiter's Great Red Spot.The spot is a raging 10,000-mile-wide cyclone big enough to swallow Earth.