Answer:
The speed of light in a vacuum is an absolute cosmic speed limit. According to the laws of physics, as we approach light speed, we have to provide more and more energy to make an object move. In order to reach the speed of light, you'd need an infinite amount of energy, and that's impossible! Simply going faster than light does not inherently lead to backward time travel. Very specific conditions must be met—and, of course, the speed of light remains the maximum speed of anything with mass.
Explanation:
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