If you accelerate at 1 G, your speed increases by 9.81 m/s every second. After 1 year, simple multiplication suggests you should be traveling at about 309 million m/s . . . which is 103 percent of the speed of light. Relativity tells us you can’t really travel faster than light, so we know that’s wrong—you can get closer and closer to the speed of light, but you can never quite reach it. Yet there aren’t any cosmic police who show up and force you to stop accelerating, so what actually happens to you? Strangely, from your point of view, nothing happens as your scooter approaches the speed of
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