March 24, 2017

Spotless Sun

Spotless Sun

The Sun has been virtually spotless, as in no sunspots, over the past 11 days, a spotless stretch that we have not seen since the last solar minimum many years ago. The videos shows the past four days (March 14-17, 2017) with a combination of an extreme ultraviolet image blended with just the filtered Sun. If we just showed the filtered Sun with no spots for reference points, any viewer would have a hard time telling that the Sun was even rotating. The Sun is trending again towards the solar minimum period of its 11 year cycle, which is predicted to be around 2020.

Image Credit: NASA/GSFC/Solar Dynamics Observatory
Explanation from:

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