SOURCES OF THE SOLAR WIND? --- "Plumes" of outward flowing, hot
gas in the Sun's atmosphere may be one source of the solar "wind" of charged
particles. The images, taken by the Solar
and Heliospheric Observatory (SOHO), show (top) magnetic fields on the sun's
surface near the south solar pole; (middle) an ultraviolet image of the
1 million degree plumes fromthe same region; and (bottom) an ultraviolet image
of the "quiet" solar atmosphere closer to the surface. SOHO is a joint
European Space Agency (ESA)/NASA program of international cooperation.