excerpt from NASA website:
The Sun's magnetic poles will remain as they are now, with the north magnetic pole pointing through the Sun's southern hemisphere, until the year 2012 when they will reverse again.
This transition happens, as far as we know, at the peak of every 11-year sunspot cycle -- like clockwork.
Earth's magnetic field also flips, but with less regularity. Consecutive reversals are spaced 5 thousand years to 50 million years apart. The last reversal happened 740,000 years ago.
Some researchers think our planet is overdue for another one, but nobody knows exactly when the next reversal might occur.
Here is link of very basic explanations on earth's magnetism, as well as pole-shift science and stories, as told to children and public:
Some researchers think our planet is overdue for another one, but nobody knows exactly when the next reversal might occur.
Here is link of very basic explanations on earth's magnetism, as well as pole-shift science and stories, as told to children and public:
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