South Pole of the Sun
This March 27, 2007, image is one of many taken by NASA's Solar TErrestrial RElations Observatory (STEREO) satellites, which have provided the first three-dimensional images of the sun. For the first time, scientists will be able to see structures in the sun's atmosphere in three dimensions. The new view will greatly aid scientists' ability to understand solar physics and thereby improve space weather forecasting.
Image Credit: NASA/JPL-Caltech/NRL/GSFC