Did you know that Nasa archives a daily picture of an aspect of the universe, along with a detailed description by an Astronomy expert? Well now you know and now you can take advantage of this wonderful bit of information. There is always more to learn about astronomy. If there were an expert who's job it was to study every grain of sand on earth and see the differences in every grain, they would have a lot in common with an Astronomer.
Todays picture isn't really a picture at all, but a video showing the sun rotate on it's axis.