According to observations on the Earth, the nearest star to the solar system is 4.25 light years away. A space ship which leaves the Earth and travels at uniform velocity takes 4.25 years, according to ship-borne clocks, to reach the star. What is the speed of the space ship, expressed as a fraction of the speed of light c?

Question

anonymous · Answer

it takes 4.25 light years to get there which means it took light 4.25 years to get there 
so if the ship takes 4.25 years to get there, what does it mean?