Three Weeks Without Sunspots

As July 17th comes to a close, the sun has been blank for 21 straight days–a remarkable 3 weeks without sunspots. To find an equal stretch of spotless suns in the historical record, you have to go back to July-August 2009 when the sun was emerging from a century-class solar minimum. We are now entering … Continue reading "Three Weeks Without Sunspots"

via The Next Grand Minimum

https://ift.tt/2L4O7ta

July 17, 2018 at 11:23PM

Leave a comment