Large Sunspot Groups 10484 and 10486 . ... Credit Copyright: Juan Carlos Casado Explanation: Two unusually large sunspot groups are now crossing the face of the Sun . Each group, roughly the size of Jupiter , is unusual not only for its size but because it is appearing over three years after solar maximum , the peak of solar surface activity. Sunspot group 10484 appears near the image center, while sunspot group 10486 is just coming over the left limb of the Sun. ... NASA Official: Jay Norris. ...