Magnetic storms and green skies on St Patrick's Day: no problems for power grid

On Saint Patrick's Day (17 March) the northern lights danced a lively green jig across the skies of Ireland and Britain. The source of these magnetic storms was not just one but two huge eruptions of electrically charged material from the Sun, which travelled through space at millions of kilometres an hour, colliding with the Earth's magnetic field. The aurora borealis lighting up the sky green for Saint Patrick's Day (17 March) 2015. This image was taken from Co. Mayo and shows the display abov...