The low solar corona as viewed in extreme ultraviolet light. Bright regions are where the most energetic solar storms are born. An eruption in action can be seen in the bottom-left. NASA’s Solar Dynamic Observatory (SDO) satellite. July 2, 2019 Total solar eclipses reveal the dark and stormy side of the sun we never see Huw Morgan, Aberystwyth University Scientists spend years preparing for the two-minute window of a total solar eclipse.