1. The problem statement, all variables and given/known data Inertial frame S' moves at a speed of 0.6c with respect to frame S. Further, x = x' = 0 at t = t' = 0. Two events are recorded. In frame S, event 1 occurs at the origin at t = 0 and event 2 occurs on the x axis at x = 3000m at t = 4*10-6 s. According to observer S', what is the time of (a) event 1 and (b) event 2? (c) Do the two observers see the two events in the same sequence or the reverse sequence? 2. Relevant equations Standard Lorentz Transformation Equations. 3. The attempt at a solution x1 = 0, x2 = 3000m, t1 = 0, t2 = 4*10-6 s x1' = 0, x2' = 2850m, t1' = 0, t2' = -2.5*10-6s Based on the question, x2' is some distance away and event 1 occurs at t = 0 in frame S'. 1) It requires some time for light to reach event 2 in S' 2) Event 1 ALREADY occurs at t = 0 Then shouldn't event 1 occur first regardless of whatever speed you are travelling? How does the concept of 'negative' time come into play here? I'm finding this very, very strange..