As they form from dust, rock and whatever other materials, that's just the natural shape that the increasingly forming gravitational pull will create in a vacuum. Everything is an equal distance from the center of mass.
-At Ford, quality is job #1, job #2 is making them explode. ~Norm MacDonald, SNL News
-Switching to Glide..Balancing in my head..inside of me...
taking the glide path instead.