[ErnstStavroBlofeld]

You cannot travel at the speed of light. Einstein's Theory of Relativity prohibits it. You may go around it by creating a mini black hole or wormhole.

[Deagle]

Hah! Little do you know about physics! Don’t you know that the speed of light is just a problem with measurement? If we could actually measure the speed of light, we would let the actual speed be known! Today, they only give you a guesstimate, forget about actual speed... So, all for the Atom Smasher...go get em boys... Actually, this just may answer some questions - while in reality, will just provide more questions. All to the good I say...

For those that might get their dander up - this is a tongue in cheek - so go away...ha...

[UnbelievingScumOnTheOtherSide]

You cannot travel at the speed of light.

I wonder about that. The Heisenberg Uncertainty Principle says you cannot know precisely the location of a particle. In principle, there is a finite, albeit remote, possibility for a particle to suddenly be on the other side of the universe. Suppose a particle improving its odds by moving near the speed of light were to occupy a point just ahead of its median position? Then it is beyond the speed of light and off to the races (relative to the observer.) More like the sound barrier then.