Maybe we haven’t discovered alien life because it’s all evolving in other universes. A team of astronomers have just published a research paper proposing that other universes could be far more livable than our own. It all depends on a few circumstances right when those universes were born. There is now a lot of confirmation that we might live in a multiverse, where there are as many universes as there are galaxies in our universe. Every universe will possibly have unalike physical laws and properties, too. As University of Michigan physicist Fred C. Adams and his coworkers say in their research paper on arXiv, one of the major variances might be in each universe’s “amplitude of primordial density fluctuations,” known as Q for short. Fundamentally, Q defines the difference between dense and empty regions of space — in this situation, in a universe. A high Q means there are high fluctuations, with tremendously dense areas and exceptionally empty areas. In our universe, for an instance, Q isn’t all that high, which is reason why we have a lot of matter spread out all over the place, with vast spaces in between stars and galaxies. But what if we existed in a universe with a high Q, and our galaxies were far deeper than they are in this universe?
So you might have a much more livable galaxy than we have right now. Life could develop nearly anywhere, even wandering between the stars.