A recent sunspot maximum occurred in 2001. What is the year of the sunspot maximum that immediately follows the 2001 maximum if the solar cycle continues?
A) 2006 or 2007
B) 2012
C) 2018
D) 2023
E) The last cycle started a Maunder minimum and the next maximum cannot be predicted.

Question

Quizplus · Accepted Answer

The solar cycle is approximately 11 years long, so the next sunspot maximum after 2001 would be around 2012.

A Recent Sunspot Maximum Occurred in 2001