Hubble Catches Neptune Forming New, Massive Storms

Neptune has a new storm, in the form of a large dark spot that appeared in late 2018. By analyzing Hubble images dating back to 2015, astronomers have discovered high-altitude clouds that formed years ahead of the visible storm, indicating it was already forming there, swirling beneath the clouds and haze. The telltale clouds are teaching astronomers more about how such storms form and evolve on all the giant outer planets.