suppose there are 2 starships, A and B, moving towards each other wuth a relative velocity of 0.999c. they pass each other at time t=t0. after moving a certian distance (relative), they stop(relative to each other), turn around and again statr moving towards each other with the same velocity, of 0.999c. this time they pass each other at time, t=t1. (neglecting the time taken for them to stop, turn around, and accelerate to the same rel. velosity.) if the time interval, t1-t0, for this entire event as measured by an observer on starship A is equal to 20 units of time, then what will be the time measured by an observer on starship B.