Let me shed some light on where the OP is getting this. This is sort of a botched "pass it on" rendering of one of the myriad of 2012 doomsday theories.

It's not the center of the galaxy, but the galactic plane. I have no idea if the sun is anywhere near about to cross the galactic plane, but the idea is this cycle of "destruction" happens when the sun crosses the plane due to the "up and down" (z axis, if we like) component of it's motion around the galactic center.

And this cycle is supposedly correlate with the precessional cycle someway somehow.

Anyway, that's what's behind what the OP heard, I'm sure. Like I said, I have no idea about the sun's z-axis motion, nor where it is in that cycle right now. Are we anywhere near a plane crossing?

This particular doomsday theory got a nice Ed Dames twist on it a while back. For those of you who don't keep up with the Art Bell universe, ol Ed is one of the top tier of guests, up there with Hoagie in the yarns they can spin. Ol' Ed has been pushing this "solar kill shot" doomsday theory for about 10 years or more. Mr. Sun is going to belch out a huge solar flare that will scortch the surface of the earth. He keeps saying it's gonna happen real soon, now...........

And he was on with Art one past weekend, just like in the good ol' days before George whats-his-name took it over most of the time, and put a new twist on this.

The solar kill shot is going to be caused by gravitational waves caused by "something to do with" the sun's crossing of the galactic plane around
2012. These large amplitude waves will shake everything in the solar system like a bowl full of jelly, causing the sun to hiccup out those big solar flares, and then shake the earth itself a good bit, causing earthquakes and tsunamis, etc, etc. Basically, Biblical destruction events.

Anyway, that's where this one is coming from.

-Richard