text: My third and final reason is, that all planets start off as a big ball of rock, meteors, and astroids that collide with each other. The possiblities of a ball of rock, a planet, having left over craters from all of the collisions, is very high. If, somewhere way far out in space, or even just one planet away, wouldn't we have had a lot more pictures, videos, and newspaper articles about aliens?