One theory suggests a 180-degree physical inversion of the planet's solid crust around its molten core. Thus, leading to major cataclysmic events and extreme physical earth changes. It is believed that this could take place if another planetary body - - such as a 'rogue planet' or similar cosmic anomaly - passed in close proximity to the Earth, providing enough torque for such an event to occur. Many believe this has occurred in the past and is due to occur again in the not so distant future.
Some speculate that this potential rogue planet will be passing Earth in the year 2012 on its 3,600 year orbit around our sun. According to theorist Zechariah Sitchin, he calls this planet Nibiru, the 12th planet of our solar system. This event could have the potential to reshape earth and life, as we know it.
The second would be a reversal of the Earths magnetic poles called geomagnetic reversal in which the positions of magnetic north and magnetic south become interchanged as the Earths magnetic field weakens. A reversal of the magnetic poles is much more likely, as it has occurred several times before in Earth's history according to paleomagnetists. Evidence for this is provided by measurements of the orientation of magnetic materials in sedimentary and volcanic rock. Research indicates approximately 200 reversals have occurred over the last 178 million years.
Scientist and author, Gregg Braden refers to this shift as, 'the shift of the ages' where Earth's magnetic field decrease to zero point, consequently reversing the magnetic flow, bring humanity into an age of Enlightenment. This shift is also thought to bring about periods of rapid cataclysmic changes. Many link this event to the year 2012 and the end of the ancient Mayan Calendar cycle.
Recent geomagnetic reversals