Sun releases the strongest flare in current cycle that triggered auroras this past weekend KABC-TVSun unleashes strong solar flare days after geomagnetic storm: NOAA USA TODAYHow NASA Tracked the Most Intense Solar Storm in Decades Science@NASAHow To Watch Aurora Borealis: Northern Lights could be visible again Saturday ForbesLargest X-class solar flare of past several years explodes from Sun Fox Weather