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The new research was supported by the National Science Foundation, which is NCAR’s sponsor, and NASA’s Living With a Star Program.

Left: Oppositely charged magnetic bands, represented in red and blue, march toward the equator over a 22-year period. When they meet at the equator, they annihilate one another. Right: The top animation shows the total sunspot number (black) and the contributions from the north (red) and south (blue) hemispheres. The bottom shows the location of the spots. Image via NCAR/UCAR

Sunspot cycle 25 starts with a bang; what will follow?