A monster sunspot is taking aim at Earth after firing off dozens of powerful flares Sunday and Monday (Feb. 1-2) — including the most intense solar eruption in years. Elevated geomagnetic activity — possibly resulting in vibrant northern lights at lower latitudes than usual — is possible Thursday (Feb. 5), according to an alert from the National Oceanic and Atmospheric Administration's Space Weather Prediction Center (SWPC). However, it's still too soon to know for certain. The sunspot, called region 4366, appeared suddenly several days ago and has rapidly grown to roughly half the size of the infamous Carrington Event sunspot,...