Last year, the media was abuzz about how a fatwa had been issued banning Muslims from taking up one-way tickets to Mars. The reasoning behind it was that it was essentially suicide, a great sin. But let's assume that we do reach a point where the Earth gets so choked up with our pollution that we're projectile vomited into the galaxy, and that all of humanity miraculously has the choice of being eaten alive in the acidic pulp of a post-Earth or fleeing to a life-sustaining Mars. What would Muslims choose? Would they be compelled towards one choice for religious reasons?
I've showerthought about it for a while, and I think this is my answer for now: some Muslims would choose Mars but they would practice a different Islam than what has ever existed. Because religions have adapted, some more drastically than others, to the world it exists in to make life easier and religions will continue to do so to survive in an ever globalizing world that asks for cooperation above all to achieve progress. So, you're probably thinking, most Muslims have shed outdated practices - so what? What does that have to do with putting mosques on Mars? Think about it this way - if I cut a few leaves and branches here and there on a tree to make it more pleasing to the eye, it's still a tree, right? But if I cut down a couple more branches, at what point is it no longer a tree? Is a stump a tree? It is, and it isn't.
Islam is so intertwined with several cultures in the world, that displacing those cultures means, in a way, that Islam becomes displaced. On Mars there is no Mecca, no Kaaba, no place on the planet that we can point towards and say, "this is the heart of our religion, this is where we gather, this is where we pray towards". For me, Islam is a way of living, a way of thinking, but an integral part of the religion is its repetition and continuity, its repeated motions that provide comfort in a non-obviously random world. So to disrupt that makes me wonder if Islam would forever be altered, and if so, in what ways? Perhaps I'll live to find an answer in my lifetime. I hope I don't.