Sun has ‘flipped upside down’ magnetically
http://mobile.wnd.com/2013/12/sun-has-flipped-upside-down-magnetically/?cat_orig=education
http://mobile.wnd.com/2013/12/sun-has-flipped-upside-down-magnetically/?cat_orig=education
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The earth is said be in the process of switching magnetic poles too. It could happen within the next century or two, or less. And when it does, a lot of electronic equipment may not work properly, especially airplane navigation equipment, satellites and/or communication equipment.
I saw a documentary about it on public television.
The cycle on earth takes many thousands of years, and many scientists believe that we're very close to the end of the cycle.
When it happens the world may experience some electrical disturbances.
A geomagnetic reversal is a change in the orientation of Earth's magnetic field such that the positions of magnetic north and magnetic south become interchanged. The Earth's magnetic north pole is drifting from northern Canada towards Siberia with a presently accelerating rate. It is also unknown if this drift will continue to accelerate. Present society with its reliance of electricity and electromagnetic effects (e.g. radio, satellite communications) may be vulnerable to technological disruptions in the event of a full field reversal.
The Earth's geomagnetic field is currently undergoing a reversal. It is not known when it will be completed, but it is already well underway, will continue into 2012 and beyond. The field is weakening with consequences of irradiation from the sun and deep space. But the reversal also means deep seated changes inside the Earth with consequences of earthquakes in places not familiar with them and new volcanoes. During the reversal, we can experience increased earthquake activity, even an earthquake storm. Three new volcanoes are being born in the various undersea locations of the Pacific Ocean at this time. The reversal is a product of the changes that go on inside the Earth. The core is spinning slightly faster than the crust that has been slowed by the effect of the moon by tidal dragging. The differential rotation is what generates the magnetic field. As the core rotates, the magnetic field lines behave like what happens on the surface of the Sun as the Sun has differential rotation from equator to pole. The differential rotation in both cases stretches the magnetic field lines so that they get wound round and round the Sun or Earth. At a certain moment in each case, the magnetic field lines snap and the field reverses and rebuilds. The differential flow of the Sun occurs much faster than in the Earth, so the magnetic cycle occurs in the sun cycles around 22 years on average. The Earth takes longer and is aperiodic due to the slower winding and the interaction of the Moon, Sun and planets. Typical field reversals can take hundreds of thousands or millions of years.
http://thewatchers.adorraeli.com/2011/03/15/about-geomagnetic-reversal-and-poleshift/
A brief complete reversal, known as the Laschamp event, occurred only 41,000 years ago during the last glacial period. That reversal lasted only about 440 years with the actual change of polarity lasting around 250 years. During this change the strength of the magnetic field dropped to 5% of its present strength.
Geomagnetic reversal - Wikipedia, the free encyclopedia