How much fuel would it take to reach the speed of light?

We can not reach the speed of light since it will require from us infinite amount of energy. It would require an infinite amount of fuel, so it would of course be impossible. Speed of light is a privilege only of objects with zero rest mass which is the case only of photons.

Is it possible to exceed the speed of light in a vacuum?

According to Einstein’s theory of special relativity, published in 1905, nothing can exceed the speed of light. That speed, explained Einstein, is a fundamental constant of nature: It appears the same to all observers anywhere in space. “There is no experiment that has contradicted special relativity.

Is it possible for humans to reach the speed of light?

We can never reach the speed of light. Or, more accurately, we can never reach the speed of light in a vacuum. That is, the ultimate cosmic speed limit, of 299,792,458 m/s is unattainable for massive particles, and simultaneously is the speed that all massless particles must travel at.

What speed does all light travel in a vacuum?

approximately 300,000 kilometers per second
Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5).

Why can’t we exceed speed of light?

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!

Why is light faster in a vacuum?

Light waves travel much faster than sound waves. Light waves do not need a medium in which to travel but sound waves do. Explain that unlike sound, light waves travel fastest through a vacuum and air, and slower through other materials such as glass or water.