What happens with the earths procession through the milky way in 2012?

The sun and earth will be lined up with the center of the Milky Way on Dec. 21, 2012. This only happens once every 26,625 years. What happens then is anybody's guess. The sun is due for a pole reversal in 2012. The Mayan calendar's great cycle ends on Dec. 21, 2012. (Coincidentally, the Mayan calendar's great cycles also run for 26,000 years and then it starts over.)

However, many people believe it signifies that that's the day the world will end....because of ancient cultures (aztecs, mayans, hindus) belief of something happening on 12.21.12 (yes it's documented), because of the lining up with the Milky Way, because of the pole reversal on the sun (and even Earth itself), because supposedly there is an asteroid headed towards us (due to be a near miss in 2012).

Fascinating stuff. Just keep in mind that throughout the centuries there has been hundreds if not thousands of end-date predictions and all were obviously....false.