SDO snapped this photo on October 8th, 2014. In this image, solar flares have gathered to form what appears to be a spooky face on sun's surface. The active regions on sun appear brighter because those are the areas that emit more light and energy - markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere, the corona.
This composite image blends two sets of extreme ultraviolet wavelengths at 171 and 193 angstroms, giving the sun that perfect Halloween-like appearance.
article reference:- nasa.gov
image credit: nasa/sdo