The Sun just finished an extended period (16 days) of zero sunspots. There were none on March 4, one visible on March 5, then none on March 6-20. Finally, one sunspot group appeared on March 21-23, with a sunspot number of 12 on all three days.
A sunspot number of 12 does not mean there were 12 sunspots. Every group of sunspots counts as 10 points, and every sunspot within those groups counts f...
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A sunspot number of 12 does not mean there were 12 sunspots. Every group of sunspots counts as 10 points, and every sunspot within those groups counts f...
Continue reading...