I love interesting facts like these ones, universe is so vaste and still we don't know what could be outside this? what if there's something bigger, something even more complicated? and just in our visible universe we have lot of dimensions we can't understand.
the concept of anisotropy for example.
look, there's an anime series (japanese comic animated series) who talks about this so good, I recommend it to you if you haven't watch it, is called kado, the right answer. I think you could easily like.