| Between the mid-sixteenth and seventeenth centuries, the sunspot cycle shut down, reducing solar output by a mere 0.25 percent. |
| In August it is crammed with holidaymakers, and all the usual paraphernalia of a Mediterranean sunspot. |
| Many magnetic storms occurred in tandem with reports of solar flares or of large sunspot regions near the Sun's equator. |
| The darkest, central region of a sunspot, called the umbra, features tightly bundled magnetic field lines. |
| It is also believed that an increase in sunspot activity can have an affect on pole reversal. |
| Three methods to determine the heliographic latitude and longitude of sunspot groups are described below. |
