Loading…
Loading contentLoading…
Loading contentA plot of the latitudes at which sunspots appear over time, first drawn by the Maunders. Across each roughly eleven-year cycle, spots emerge first at mid-latitudes and then closer to the equator, so successive cycles trace wing-shaped patterns. It is the clearest visual summary of the solar activity cycle.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.