The spacecraft took a photo of the sun every 0.75 seconds in multiple wavelengths. This video used images taken at a wavelength of 17.1 nanometers, which NASA said showed the sun’s corona, or the outermost layer. Using one image from each hour, the video compressed each day into a second and the entire decade into just over an hour of footage, all set to the original tune “Solar Observer” by Lars Leonhard.
Watch closely, and you’ll catch Venus transit at 12:24… Mercury at 36:18… and a sequence of solar flares at 44:20: