Large Sunspot Group AR 9393 . ... Credit Copyright: MDI , SOHO , ESA , NASA Explanation: The largest sunspot group of the past ten years crossed the surface of the Sun late last month and early this month. The group was designated Active Region 9393 as it was the 9393rd region identified since counting officially began in 1973. ... Will the above sunspot group remain as its region rotates back into view in a few days, or will it break up on the far side of the Sun? ... NASA Official: Jay Norris. ...