The solar wind has two distinct components, slow and fast. Where on the surface of the Sun to they originate?. In January, the Sun occulted our line of sight to the Galileo satellite on its tour of Jupiter's moons, and so provided a remarkable bonus for Solar physicists. The scintillation of radio signals from Galileo, as they passed through the Sun's atmosphere, shows that the slow wind comes from equatorial 'streamers' in the corona, and the fast wind comes from the whole solar surface — not just the polar regions, as had been thought.