MAGNETIC FIELD REVERSAL ON THE SUN: It hasn't happened yet, but it's about to. Data from NASA-supported observatories show that the sun's global magnetic field will flip before the end of 2013. The reversal, which signals the arrival of Solar Maximum, will have ripple effects felt throughout the solar system. Get thefull story and a video from Science@NASA. Solar flare alerts: text, voice.
GEOMAGNETIC STORM: A solar wind stream hit Earth's magnetic field on August 5th, sparking a G1-class geomagnetic storm and auroras over several northern-tier US states. (Subscribers to our space weather alert system were notified that a storm was in progress.)