Ithink its either c or d astronomers measure large distances in light years one light year is the distance that light can travel in one year or approximately 5.88x 10*12 miles suppose a star is 3.2x10^2 light years from earth in scientific notation approximately how many miles is it? a: 1.88x10^12 b: 5.88x10^14 c: 3.2x10^15 d: 1.88x10^15