Astronomy
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Speed of Light

# How much energy is needed to travel at the speed of light?

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It is not possible for any object with any mass to travel at the speed of light. It is possible to travel at 99.9999999999999999999999999999999999999% the speed of light, you could even travel at "99.9 followed by a trillion trillion 9s"% of the speed of light but never quite 100%.

According to our current mathematical theories, for an object with any mass to travel at the speed of light it would take infinite energy to attain that speed.

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## Related Questions

Electromagnetic energy travels at c, the speed of light. The speed of light, c, is 299,729,458m/s

Matter can travel at any speed you like, if you can pump enough energy into it.The only limit is the speed of light. If you can supply it with enough energy, thenyou can make the matter move as close to the speed of light as you want it to,but there is not enough energy anywhere to make it move at the speed of light.

Quite simply, the two things - being "a form of energy" and travelling at a speed of light - are completely unrelated. There are other forms of energy that don't travel at all, like potential energy.

In a nut shell E=mc^2 it will take an infinite amount of energy to accelerate to the speed of light since there is no such thing as infinite energy light speed in impossible however you can manipulate the space time continuum to travel faster than light.

A man can't travel at the speed of light.A man can't travel at the speed of light.A man can't travel at the speed of light.A man can't travel at the speed of light.

If a person were to travel at the speed of light, their kinetic energy, and thus their mass, would be inifinite.

They are forms of electromagnetic radiations, which all travel at the same speed, speed of light.

There is no way to travel at the speed of light.

Nothing with a rest mass can travel at exactly the speed of light, it would take an infinite amount of energy. Light can travel at that speed because it has zero rest mass. Earlier Answer below So far, we don't know if a human can travel at lightspeed. However, it's easier to travel at the speed of light than to travel through time. New Answer: The problem I always had with the term light speed is that speed is relative. We may be traveling close to the speed of light right now in relation to some other object in the universe.

Electromagnetic waves travel at the speed of light in a vacuum, which is the the way energy travels from the Sun to the Earth.

Mass of a body and its speed are needed to calculate kinetic energy. Kinetic energy of an object = mv2/2 This formula is useful only when object's speed is much less than speed of light.

The speed of light in water is less than the speed of light in space. Only light can travel at the speed of light.

What is the speed of light? About 300,000,000 meters per second - enough to travel all around the Earth 7.5 times in one second. Can anything travel nearly as fast? - Yes, in particle accelerators particles are regularly accelerated to over 99% of the speed of light. According to current scientific understanding: (a) it is not possible to transfer matter, energy, or information faster than the speed of light. (b) An object that regularly travels at a slower speed can't be made to travel at the speed of light - it can only approach it. (A photon, that is, a speed of light, can only travel at the speed of light.)

No. Nothing with mass can travel at the speed of light.

Speed is how fast something moves. Light is a form of energy carried by massless photons, these photons move at the speed of light, which is the fastest speed that anything in the universe can travel.

Actually Einstein postulated that nothing can travel at the speed of light. He theorized that as something approaches the speed of light its mass increases. This means that for something to travel at the speed of light it needs to have an infinite source of energy. The only things that can travel at the speed of light are particles that have no mass, otherwise known as photons.

Light is fastest because it is made up of particles called photons which have no mass. To speed up an object, you have to give it energy. The theory of special relativity predicts that to make an object with mass travel at the speed of light would require an infinite amount of energy, which is impossible. Thus, nothing with mass can travel at the speed of light (and, therefore, nothing with mass can travel faster than light).As a side note, all massless objects (including gravitons, which mediate the gravitational force) travel at the speed of light.

No. No object with mass can travel at the speed of light. That would require an infinite amount of energy. Missiles travel at a few hundred to a few thousand miles per hour depending on the type.

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).

Firstly, it takes an infinite amount of energy to accelerate an object with 'mass' to the speed of light. A massless particle removes that energy problem. Secondly, approaching the speed of light is not actually much of an issue for even a particle with mass. The Large Hadron Collider accelerates particles to just 3m/s below the speed of light, 'almost the speed of light' by any definition. While it takes an immense amount of energy, it can still be done.

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.

186,000 miles or 300,000,000 meters per second. The speed of light.

Both are forms of electromagnetic energy and travel at the same speed, which is the speed of light.

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