Articles in Solar Cycle
Ancient Mayans Could Measure Solar Activity
Many ancient cultures knew of planets that could not be seen with the naked eye, and therefore it is possible they counted sunspots as well. Yet there is a far easier way to keep track …
Solar Cycle 25 Will Be Quiet
As I have said before, once scientists have made predictions ahead of time, and then consequently got them right, for a few cycles in a row, then we might trust their forecasts. So far that …
NASA: Solar Cycle 24 may have begun
It could be starting now.
“New solar cycles always begin with a high-latitude, reversed polarity sunspot,” explains Hathaway. “Reversed polarity ” means a sunspot with opposite magnetic polarity compared to sunspots from the previous solar cycle. …