This requires either gravity or some other force to be communicated much faster than is normal EM radiation.
No communication is possible at speeds faster than light speed.
I ask how a structure can form when the time needed for one part to sense the characteristics of another part takes millions of years to be communicated?
It does not matter if the delay is one pico second in an electronic circuit or millions of years in the universe. The mechansims the hold mometum constant are the same. All fields the communite at luminal velocities. The movement through the static field of a remote body produces an induced field. The movement of a local body produces an induced field. These induced fields are local. The produce a force which balaances the momentum of the system during the interval when the orginal field cannot. They also act as a resovour of momentum and energy. this resovour is depleated after the disturbance propagates between the two interactiong bodies.
Frank
frank Z
