Astronomy
Physics
General and Special Relativity

Can photons travel faster than the speed of light?

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2017-02-25 16:14:22
2017-02-25 16:14:22

No.

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2017-02-13 23:25:50
2017-02-13 23:25:50

In a vacuum, photons will only ever travel exactly at the speed of light. They can't go slower, and they can't go faster. Note that going faster than the speed of light would violate causality, so this is usually deemed impossible.

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2017-02-13 17:53:06
2017-02-13 17:53:06

No photons are massless particles of light and travel at the speed of light

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There is nothing, including photons, that we know of that can travel faster then the speed of light. It is the single fastest known thing in our universe.


A photon. Neutrinos have mass and therefore must travel at less than the speed of light. Photons of light travel at the speed of light.



It seems to be impossible to travel faster than the speed of light (in a vacuum).It seems to be impossible to travel faster than the speed of light (in a vacuum).It seems to be impossible to travel faster than the speed of light (in a vacuum).It seems to be impossible to travel faster than the speed of light (in a vacuum).


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You don't. The only objects that can travel at the speed of light are those that ONLY travel at that speed, like photons or gravitons.


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Light. No ordinary matter can travel at or faster than the speed of light.


An object (like us) whose common situation is to be below the speed of light, can never quite reach the speed of light. In theory, such an object can get quite close to the speed of light, though. There are particles - such as photons - that can only travel at the speed of light.


No. Speed of light is constant in all frames of reference, even if you are also traveling at the speed of light, the photon will speed away from you at the speed of light. When you see an object, what is happening is that photons are reflected off the object you are looking at and bounce back into your eye. However, if you are traveling faster than the speed of light, the photons can never reach you to start with, hence, you are invisible until your speed decreases to something below the speed of light. It is possible to travel faster than light in many ways. First, if you have a negative amount of energy, you will always travel faster than a speed of light. Another possible way is to compress the space in front of you, then move to your destination before re-expanding the space you have just past.


It isn't clear at all what you mean. In any case, it isn't possible to travel at the speed of light - except for specific particles, such as photons (pieces of light), which can ONLY travel at the speed of light.


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According to the Theory of Relativity, nothing can go faster than the speed of light. And since light is information, it cannot go faster than the speed of light.


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The speed of light is almost a million times faster than the speed of sound. Lots of things are faster than the speed of sound. It is considered basically impossible for anything to travel faster than the speed of light.



I am not sure what you mean with "hyper velocity". In a vacuum, photons basically travel at a single speed, known as the "speed of light".



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