There’s one thing that the galaxy has shown humanity.  Life’s resilient.  Individual life forms die, but life in all its myriad ways continues.  No matter how harsh a world is, you will find life of some kind there.  You see, it is the natural tendency of life to spread out, to grow.  It adapts, it changes, and it survives, in even the harshest of all locations.  Often it is simply hard to recognize.