Special relativity says that every person has their own time.

The speed of light is 1, the same as in special relativity.

See mass in special relativity for more information on this debate.

Thus they should travel at exactly the speed of light according to special relativity.

I would suggest looking up some material on special relativity if you feel interested.

He has also written a popular science text about the theory of special relativity at Nobelprize.org.

The results were in agreement with special relativity, even though the accuracy was only 30%.

Because of special relativity, these are not two separate assumptions.

Einstein had already developed the theory of special relativity at my age.

For example, special relativity and its effects are regularly mentioned.