Here is something I have thought about and would like to hear some other peoples opinions on what would happen if. You had a huge disc in space. Made from an indestructable material that wouldn't bend or twist. The disc has a circumference of 599,584,916 meters. The disc would be spun by a shaft with a diameter of say 19 meters. Then you space clocks at regular intervals in line with each other from the center of the disc to the outer edge. With another clock not attached, to be a control clock. Then you spin the shaft at 60 RPMs. Or one turn per second. So saying that nothing would fall apart. A clock placed at 9.5 meters out from the center of the disc. Would be traveling approximately 60 meters per second. (That is equal to the circumference of the disc at that point.) As you kept moving out each clock would be traveling faster and faster than the ones before it. Then at about 4,771,351 meters out from the disc center the clock there would be spinning at the speed of light. (Traveling a circumference of 299,792,458 meters) The clock at the outer edge of the disc would be traveling 2x the speed of light. Some things I know would happen are. Each clock although inline with each other would be in different space times. The disc itself would be in different space times from itself. From 4,771,351 out from the center and past that it would be going back in time. Right? Also the mass of the disc would increase from the center out. At 4,771,351 meters out from center and past that it would reach infinite mass? Would that mean that even though the shaft that spins the disc isnt moving that fast. 60 meters a second at its fastest point. It couldn't go that fast cause it would then be attached to a disc that after a certain point has an infinate mass? So the shaft would then have a speed limit of just under 30 rpms? (Which would mean that the outer edge of the disc would be traveling at just under the speed of light) So even with the shaft having a max speed of just under 30 RPMs. The clock and the atoms at the outer edge of the disc would be barely moving through time, compared to the control clock (cause the would be moving just under the speed of light). Or to a clock and the atoms at the center of the disc. If the disc were to keep spinning. Say 100 yrs on the control clock. The atoms and the clock on the outer edge of the disc would be almost 100 years younger than the clock and the atoms at the center of the disc. So the same disc would exist both in the present (in relation to the static control clock) and nearly 100 yrs in the past?