<P> At solar maximum, the Sun's magnetic field lines are the most distorted due to the magnetic field on the solar equator rotating at a slightly faster pace than at the solar poles . On average, the solar cycle takes about 11 years to go from one solar maximum to the next, with duration observed varying from 9 to 14 years . </P> <P> Large solar flares often occur during a maximum . For example, the solar storm of 1859 struck the Earth with such intensity that the northern lights were visible as far from the poles as Cuba and Hawaii . </P> <P> Predictions of a future maximum's timing and strength are very difficult; predictions vary widely . There was a solar maximum in 2000 . In 2006 NASA initially expected a solar maximum in 2010 or 2011, and thought that it could be the strongest since 1958 . However, the solar maximum was not declared to have occurred until 2014, and even then was ranked among the weakest on record . </P> <P> IMAX documentary about solar maximum called Solarmax . </P>

When is the next sunspot maximum going to occur
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