The distance from earth to the center of our galaxy is about 24000 ly (1 ly = 1 light-year = 9.47 1015 m), as measured by an earth-based observer. A...

The distance from earth to the center of our galaxy is about 24000 ly (1 ly = 1 light-year = 9.47 1015 m), as measured by an earth-based observer. A spaceship is to make this journey at a speed of 0.9965c. According to a clock on board the spaceship, how long will it take to make the trip? Express your answer in years (1 yr = 3.16 107 s).