We humans found the distance between the earth and the moon through a method called "the laser pulse method".in this method a strong laser beam is transmitted towards the moon. A sensitive receiver in the earth received the bounced signal.the total time was calculated and the distance was determined by the formula "d( distance=v(velocity)/t(time).

here time is t/2 as the total time consists of the time to reach the moon and the laser beam coming back. So,time is divided by 2.is it enough?

here time is t/2 as the total time consists of the time to reach the moon and the laser beam coming back. So,time is divided by 2.is it enough?