3 ms·Btw, you can drop this into Google: lightsecond / 3e9 in inches: 1 lightsecond / 3e9 = 3.93428423 inchesby daeken 15y agoBtw, you can drop this into Google: lightsecond / 3e9 in inches: 1 lightsecond / 3e9 = 3.93428423 inches