17:53 SEWilco 2048×1280×8 (135177 bytes) Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers. {{PD-USGov-NASA}} Source: http://science...
(2,150 × 1,280 (142 KB)) - 10:07, 1 October 2020
Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers. Spörer's law noted that at the start of an 11-year sunspot cycle, the...
(2,048 × 1,280 (132 KB)) - 15:20, 6 March 2020