The first thing I heard this morning was that something was racing toward the Earth at 4 milllion mph. Not exactly the way you want to start the day! Here's the story. Tuesday, the Sun produced one of the biggest flares ever seen, according to msn.com. The results of it could affect power grids, GPS navigation systems and some airline schedules starting tonight and continuing through early tomorrow. The particles are speeding toward Earth at 4 million mph as we speak.