Why was the 2012 galactic alignment supposed to be catastrophic?

[rebecca8]

I keep hearing people talking about this as if they know what they are talking about. Would someone enlighten me? Something tells me this could not happen, but I cannot explain what I'm thinking as I am not an astrophysicist or anything. I'm referring to the 2012 hype.

 

[Ivan Seeking]

https://www.physicsforums.com/showthread.php?t=237624