A massive solar eruption may lead to the strongest radiation storm in seven years

Last week, a swelling solar storm on the surface of the Sun sent a stream of charged particles hurtling toward Earth, making for beautiful northern lights in the planet's extreme latitudes. But late last night, at 10:59 p.m. EST, the now massive tempest unleashed an eruption that scientists expect will be responsible… »1/23/12 4:29pm1/23/12 4:29pm