I highly reccommend watching the video simulation of the collision: http://hubblesite.org/newscenter/archive/releases/2012/20/video/a/ http://hubblesite.org/new

I highly reccommend watching the video simulation of the collision: http://hubblesite.org/newscenter/archive/releases/2012/20/video/a/ http://hubblesite.org/newscenter/archive/releases/2012/20/vi... Phil Plait also has some good commentary over at Bad Astronomy: http://blogs.discovermagazine.com/badastronomy/2012/05/31/hold-on-tight-in-4-billion-years-were-due-for-a-galactic-collision/ http://blogs.discovermagazine.com/badastronomy/2012/05/31/ho...