Last updated on April 18, 2014 at 13:58 EDT

SDO Second Anniversary – Plasma Indirection

February 20, 2012

As if it could not make up its mind, darker, cooler plasma slid and shifted back and forth above the Sun’s surface seen here for 30 hours (Feb. 7-8, 2012) in extreme ultraviolet light (171 angstrom).   credit:  NASA