I never got an answer on my question recently. It was about a galactic event that will happen on December 21st, 2012. The Earth will wobble and the Sun will be in the center of the Galaxy at the same time, which happens every 26,000 years. The ancient Mayan people knew about this somehow.

My question was, what will actually happen on that day? Will the wobble be detectable to humans somehow? Does the two events mean anything really? I know we won't explode and there won't be the doomsday crap that some believe, but I'm curious if the Earth will lose or gain a couple of milliseconds on the day like the Indian Ocean Eartquake of 2004 caused.

Also how could the Mayan people have found out about this event??