-Nothing travels faster than the speed of light.
-No matter how fast you are moving the speed of light seems to be the same speed as if you were not moving at all.
-As an object or person is accelerated toward the speed of light time slows down for it/him.
This last property leads to the "twins" effect: Twin brothers live on Earth. One brother takes a trip to a distant star traveling at a high percentage of the speed of light. When the twin returns he will be younger than his brother because for him time slowed down during the trip.
This effect, called "time dilation," helps explain why the speed of light is the same no matter how fast you are going. As a traveler accelerates time slows down for him. This, in turn, affects his measurements.
hope this leads to a relevant conclusion
