Say I create 10 galaxys. Then at a later time I want to create 100 random stars in one of these galaxys. So in other words I want each of these galaxys to have it's own unique random seed. But... I want the seed to be the same every time you play the game.. so it can't be based on things like the current time. The problem I find is that if you create random seeds with a random number generator then this makes things less random. So what is the correct way to do this?