Hey, so I have some semi-random thoughts about stuff in the universe etc. My first concern is as to why we have the vast empty vaccum that is space between the masses of our universe. Unless there's some form of structure that keeps everything place, shouldn't everything get sucked together? What keeps the distances between objects to maintain the vaccum? Does this somehow tie into the mystery that is gravity? Perpaps gravity represents the force of the vacuum fighting against the structure that keeps everything from collapsing?