Posts tagged as sunspot

Has the solar maximum arrived?

  During 2008 and 2009 an eerie quiet descended on the sun.  Sunspot counts dropped to historically-low levels and solar flares ceased altogether.  As the longest and deepest solar minimum in a century unfolded, solar physicists wondered  whether  a solar maximum  would ever return and if so when? “It’s back,” says Dean Pesnell of the […]