POTENTIALLY DANGEROUS SUNSPOT: New sunspot AR3806 has a 'delta-class' magnetic field that poses a threat for strong X-class solar flares. Any explosions this weekend will be geoeffective as the sunspot is turning to face Earth. Solar flare alerts: SMS Tex t

A CRACK IN EARTH'S MAGNETIC FIELD: During the late hours of Aug. 30th, a crack opened in Earth's magnetic field. Solar wind flowed through the gap, sparking a G1-class geomagnetic storm with auroras in both Europe and the USA. P-M Hedén sends this picture from Vallentuna,

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