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In this latter scenario, the planets would be much closer to the black hole, each completing an orbit in just about 9 hours. This means they would orbit at extraordinary speeds — about 10 percent of the speed of light. According to Einstein's theory of special relativity, time would appear to move noticeably more slowly the closer one gets to the speed of light, so "two babies born at the same instant on different rings would age at slightly different rates," Raymond said. "The baby on the inner ring would age slightly more slowly."Share
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