The solar physics community is abuzz this week. No, there haven't been any great eruptions or solar storms. The source of the excitement is a modest knot of magnetism that popped over the sun's eastern limb on Dec. 11th, pictured below in a pair of images from the orbiting Solar and Heliospheric Observatory (SOHO).According to scientists this is sign of a new solar cycle.
Solar cycles generally happen in 11 years interval.Last solar cycle started in 1996 it was the 23rd as known. 24th solar cycle about to begin in 2007. Those solar cycles have effect on the human made powergrids and satellites. It may have impact on telecommunication and air traffic.