I guess it's an interesting subject but it's got little bearing on this. The suspension of disbelief will happen in the Thor movie, which is going to end with him coming to Earth. All that you need to do in the Avengers movie - which will surely be heavily influenced by the way it was done in The Ultimates - is have Tony Stark either be fascinated by Thor as a subject or not believe his claims until the end of the movie. STark becomes the audience identification character.
And since Asgard is going to be portrayed as another dimension more than a celestial place, I think there will be plenty of space for string theory gobbledygook and multiverse bullshit to make it all seem more sciencey.
And since Asgard is going to be portrayed as another dimension more than a celestial place, I think there will be plenty of space for string theory gobbledygook and multiverse bullshit to make it all seem more sciencey.






Thor, the crevasse! Fill it with your mighty juice!!!