You want to visit your friend Ford Prefect, who lives in the vicinity of Betelgeuse, 425 light-years from Earth (that is, light takes 425 years to arrive from Betelgeuse). You hitch a ride on a passing starcruiser, and as measured by Earth observers, you travel so fast that the trip only takes 426 years.
(a) How long was the trip according to you?
(b) What is the distance between Betelgeuse and Earth, according to you?