how can you travel faster than the speed of light?
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If an object tries to travel 186,000 miles per second, its mass becomes infinite, and so does the energy required to move it. For this reason, no normal object can travel as fast or faster than the speed of light.
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Einstein's theory that nothing can travel faster than the speed of light in a vacuum still holds true, because space itself is stretching, and space is nothing. Galaxies aren't moving through space and away from each other but with space—like raisins in a rising loaf of bread.
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So the faster something travels, the more massive it gets, and the more time slows – until you finally reach the speed of light, at which point time stops altogether. And if time stops, well then, so does speed. And so nothing can travel faster than the speed of light.
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The theory of special relativity showed that particles of light, photons, travel through a vacuum at a constant pace of 670,616,629 miles per hour — a speed that's immensely difficult to achieve and impossible to surpass in that environment.
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Tachyons. In special relativity, it is impossible to accelerate an object to the speed of light, or for a massive object to move at the speed of light. However, it might be possible for an object to exist which always moves faster than light.
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But when light is sent out, as a photon, it has to accelerate from speed 0 m/s to 3,0*10^8 m/s. ... Light can't just suddenly move at its maximum speed, it has to accelerate like every other object in motion has to.
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For one thing, while nothing has ever been observed travelling faster than light, that does not mean it is not theoretically possible to break this speed limit in very special circumstances. Take, for instance, the expansion of the Universe itself.
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The speed of light is torturously slow, and these 3 simple animations by a scientist at NASA prove it. The speed of light in a vacuum is about 186,282 miles per second (299,792 kilometers per second).
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Light is the fastest-moving stuff in the universe. It travels at an incredible 186,000 miles (300,000 km) per second. ... Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).
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"Since nothing is just empty space or vacuum, it can expand faster than light speed since no material object is breaking the light barrier," said theoretical astrophysicist Michio Kaku on Big Think. "Therefore, empty space can certainly expand faster than light."
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Photons travel in harmonic waves at the fastest speed possible in the universe: 186,282 miles per second (299,792,458 meters per second) in a vacuum, also known as the speed of light.
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Can information travel faster than light? ... One of the tenets of Einstein's Theory of Special Relativity is that nothing can travel faster than the speed of light in a vacuum. Light speed is considered the universal speed limit of everything, and this is widely accepted by the scientific community.
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The answer lies in tachyons. These are particles with imaginary mass that can be thought of as travelling backwards in time. They move faster than light, and slowing down to the speed of light would be as impossible for them as it is for us to accelerate to light speed.
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Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second. It takes 499.0 seconds for light to travel from the Sun to the Earth, a distance called 1 Astronomical Unit.
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In other words, the faster an object moves, the greater its mass. ... If an object tries to travel 186,000 miles per second, its mass becomes infinite, and so does the energy required to move it. For this reason, no normal object can travel as fast or faster than the speed of light.
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Gamma rays travel faster than visible light. All electromagnetic waves travel at the same speed in a vacuum.
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Light doesn't need a medium to travel. The speed of sound through air is about 340 meters per second. It's faster through water, and it's even faster through steel. Light will travel through a vacuum at 300 million meters per second.