Robert Tulip ., I said ..." It was simply the easy method of understanding the geometry and movement of the components of this galaxy. As Earth trolls around the sun. Our view of the sky changes. We find the galactic center some times obscured by the sun. Thats the only significance to this annual event." and from your comments I need to explain myself further. Yes on that wonderful image of this galaxy they have emplace the lines of inclination and declination. Yes the solar system does cross the galactic plain. Yes it has happened before., and will again. and, Yes the view of the galactic core will and is often obscured by the sun. That is not an alignment of any significance, ( its only visible in daylight. ) and would pass un-noticed but for a group of crazed doomsday naysayers.... We have no knowledge of any object or fanominum that places us at any greater risk than is the normal. I can tell you that If we were to find information that leads us down this road and or in any way endangered humanity you will read it here.