When an object is spinning in a closed system and no external torques are applied to it, it will have no change in angular momentum.
The conservation of angular momentum explains the angular acceleration of an ice skater as she brings her arms and legs close to the vertical axis of rotation.
If the net torque is zero, then angular momentum is constant or conserved.
Where does the same direction come in?
With an explosion it can be observed you contention is not factual. Objects spin in all kinds of directions and with different direction of spin away from the source of the explosion.
why should the planets spin in same direction if the Big Bang is real?
Because of a law in physics called The Conservation of Angular Momentum.
Where does the same direction come in?
With an explosion it can be observed you contention is not factual. Objects spin in all kinds of directions and with different direction of spin away from the source of the explosion.