A tachyon
Please be more specific.
Light always travels at the speed of light, although that's a different number in different substances.
Yes. The more dense the material the slower light travels. Light travels the slowest in diamond at about a third of its normal speed of 300 000 km /s in a vacuum.
The speed of light is dependent on the medium it travels through. Light travels fastest in a vacuum than in water or air.
A asteroid travels at the speed of light.
No!...Speed of light is the fastest speed possible, but now a new particle called lepton is more faster than light...rather it is has the fastest speed discovered till now.It travels in the same wave as light travels i.e tranverse waves.
The only thing that travels at the speed of light, is light. Light is also said to have no mass, therefore the only way for something to travel at the speed of light is for it to have no mass.
No, not quite. The sound travels at the speed of sound to your ear.
No, the speed of light in a vacuum is constant and is approximately 299,792 kilometers per second. This means that light always travels at this speed regardless of the observer's motion or the source of the light.
It only travels in the speed of light
No, electricity does not travel at the speed of light. The speed at which electricity travels depends on the medium it is passing through. In most cases, electricity travels at a fraction of the speed of light.
Light is much faster then the speed of sound. Sound travels at a speed of about 768 Miles per hour, when light travels at a speed of 186,282 miles per SECOND.