New Year's Eve Solar Flare: M6.4 on 12/31/13
An M6.4 class solar flare erupts from the sun in this image from NASA's Solar Dynamics Observatory, which was captured on Dec. 31, at 4:59 p.m. EST. [VIDEO: Watch the New Year's Solar Flares]
Giant Sunspot Makes Third Trip Across the Sun
A giant sunspot appeared on Feb. 25, 2014, for its third trip across the face of the sun. This blend of two images from NASA's Solar Dynamics Observatory shows the sunspot in visible light and an X-class flare observable in ultraviolet light.