Considering that life forms and random chemicals have been interacting for a few billion years a billion time a seconds, it's not unfathomable to think that certain results begin to dominate.
The sun and moon are what and where they are because of universal attraction/gravitational pull and the result of 14 billion of years of interactions of space junction consisting of 9x 21 zeros (sextillions) suns, likewise a number of livable planets, and you can imagine how many unlivable planets, then the moons(you count them). The interactions possible of these are almost incalculable. As said earlier, monkeys and typewriters.
