I'm not that deep in physics. But some days ago I read, there could be different coexisting universes, which could even share "space" (or what ever it is) where each of them could have absolutely different laws of physics.
Now when I'm thinking about the expanding of our universe is described by the speed of light what is an physical low by itself (isn't it?), Then I'm asking my self if there is another universe with physical laws where the speed of light is an 'uncountable'(I don't know what power would suffice what I'm going to describe) times of ours, or even its expansion is mapped to something completely different.
Would there be something in our known laws of physics disproving or even supporting that there could be an universe expanding with such an power that if it 'hits' our universe, our universe would just blown out of existence within some seconds of our known timescale?