posted on Sep, 5 2012 @ 04:07 AM
reply to post by stereologist
Maybe we do, we just don't know it. If we could film a galaxy over perhaps 50,000 years then speed it up into a 10sec clip, but we can't do that.
I'm not sure weather it would be witnessed as a explosion or a pulse, I guess that would depend on where you are observing from.
But knowing the speed of light, and the vast distances from a galaxys centre to its edge, looking from far away, the speed of light becomes very slow
indeed. Looking at pictures of other galaxys, some do apear to be being effected by a pulse type energy pushing away from the centre, instead of, like
ours (which I don't believe we have a photo of yet from the outside) where it looks like all is being sucked towards the centre.