See the Sun in high-def
Now that you've read about our star's composition, watch its roiling surface in action from the comfort of your own computer.
October 20, 2010
Photo by SDO watched as an active region in the Sun's southern hemisphere produced a whole series of looping arcs of plasma in profile.
When NASA launched the Solar Dynamics Observatory (SDO) February 11, 2010, it made possible some of the best-ever solar observations. This 19-second video shows a series of looping arcs of plasma in an active region of the Sun's southern hemisphere, from September 11 to 13, 2010.
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