Starting at BB everything moves outwards with linear momentum so unless the BB event was rotating where does the angular momentum come from, the earth rotates, it orbits the sun, the galaxy is rotating and the sun orbiting within it. So it seems that angular momentum is the norm for bodies within the universe yet apparently the universe itself does not spin. If the earths orbit is due to spacetime curvature where does its spin come from and that of all rotating bodies. Linear momentum is a conserved quantity unless acted upon by an external force. What outside forces acted upon the origional linear momentum?