![]() ![]() The faster we want the object to go, the more energy we’ll need. To accelerate an object with mass, we have to add energy. Specifically, relativity tells us that nothing with mass can accelerate past the speed of light. According to this theory, the speed of light operates as a universal speed limit on anything with mass. ![]() One of our best physical theories at the moment is the theory of relativity, developed by Albert Einstein. However, for certain strange particles, travelling at twice the speed of light might be possible – and it might send those particles back in time. In fact, it’s not possible for any object with the kind of mass you or I have to move faster than the speed of light. As far as we know, it’s not possible for a person to move at twice the speed of light. ![]()
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