Magnetic field reversals ?
yes we have seen this in our reseach about magnetic fields on the sun reversing every 11 years - Haven't we??
The Earth's magnetic field is aligned roughly along the spin axis and has an approximate dipole shape, similar to that of a bar magnet, with north and south magnetic poles. This is the normal state of affairs, but occasionally the magnetic field switches polarity, the north and south magnetic poles reverse, and the field settles down in the opposite state. The process goes by several names – "magnetic field reversal" and "polarity transition" are the most common.
Reversals have been documented as far back as ..Read on...http://gsc.nrcan.gc.ca/geomag/nmp/reversals_e.php
Posted by Jay Roberts at 09:18 PM | Permalink