Chromosphere Bright Spots

Chromosphere Bright Spots

. Numerous ultraviolet bright spots are seen in this image from the SOlar and Heliospheric Observatory (SOHO). It shows the chromosphere at temperatures of 60,000 to 80,000 degrees Kelvin. Two intense active regions with numerous magnetic loops are also seen, as well as a huge eruptive prominence at the solar limb. This image was taken on 14 September 1997 in the extreme ultraviolet resonance line of singly ionized helium (He II) at 30.4 nanometers. (Courtesy of the SOHO EIT consortium. SOHO is a project of international cooperation between ESA and NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University