SOLAR ACTIVITY: Today, the Solar and Heliospheric Observatory (SOHO) is monitoring an enormous prominence on the sun's southeastern limb. Behold three hours of fiery action:
The prominence has been growing for more than a day. As it towers higher and higher above the surface of the sun, the odds increase that it will erupt and come crashing down--a must-see. Readers, if you have a solar telescope, train your optics on the sun's southeastern limb.
more images: from J. Macieszek and J. Stetson of South Portland, Maine
