One theory suggests a galactic alignment which would create chaos on
Earth because of the gravitational effect between the Sun and the Black
hole called Sagittarius A, which is located at the center of our galaxy.
Another theory involves a 'polar shift', which means a reversal of the north and south magnetic poles.
Scientists
believe that the Earth is overdue for a geomagnetic reversal. However,
this can take up to 5,000 years to complete and does not start on any
particular date.
NASA scientists have thoroughly studied and analyzed the possibility
of the Earth ending in 2012, and have concluded that 21st December 2012
will be nothing more than a normal December solstice.
There is simply no scientific evidence to support any claims of an apocalypse on Earth on December 21, 2012.
In response to theories about planetary alignments leading to an
apocalypse on Earth on December 21, 2012, scientists say no planetary
alignments is likely to occur in the next few decades. And even if they
did, the effects on our planet would be negligible.
NASA
scientists also claim that the 'polar shift' theory is totally
impossible. Although continents move slowly throughout time, a magnetic
reversal is very unlikely to happen in the next few millennia and would
not cause any harm to life on Earth.
The scientists' conclusion is
that the end of the Mayan calendar does not imply the end of the world,
only the end of the Mayan long-count period. The 'long count' is a part
of the Maya calendar shaped like a wheel. When we reach the end of the wheel, it will turn to the beginning again, just like our modern Gregorian calendar starts again every January 1.
