"NASA will hold a press conference on Monday, April 23 at 11:00 a.m. EDT to unveil new 3-D images of the sun from the agency's Solar TErrestrial RElations Observatory (STEREO). For the first time, scientists will be able to see structures in the Sun's atmosphere in three dimensions. The new view will improve space weather forecasting and greatly aid scientist's ability to understand solar physics."
Larger image (3D glasses required for stunning full effect). You may have seen some sneak previews of images this morning on ABC's Good Morning America.