The leading edge of a solar storm, which was expected since a massive eruption on the sun on Thursday, has reached Earth but caused no damage. The US Space Weather Prediction Center of the National Oceanic and Atmospheric Administration reported that a G1, or minor, geomagnetic storm was under way today. 

Scientists say the storm, which reached Earth yesterday evening, could stretch to G2, or moderate, levels over the remainder of the weekend. Solar storms can affect power grids, mobile phone communication as well as aviation.