Dynamic Sun: Stunning Three-Year Time-Lapse View is a video from NASA. Here’s how they describe it:
In the three years since it first provided images of the sun in the spring of 2010, NASA’s Solar Dynamics Observatory has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle. This video shows those three years of the sun at a pace of two images per day.
I’m adding it to The Best Images Taken In Space.