Very important question
Andromeda Initiative launched in late 2185, and Mass Effect 3 ended around the middle\late 2186. As far as we know, almost all endings includes the explode of relays. If we assume that the time inter...
Forum Discussion
I think it's also important to factor in that while they might not be outside the ultimate radius of the explosion, it's important to wonder how fast the explosion reached it's full expansion distance. We've got the Andromeda ships going beyond physics speed for a full year, does the explosion happen at faster than beyond physics speeds? I don't believe that just, everything in the entire radius blew up at once, total simultaneous destruction. There was a starting point, from which it expanded. It might very well have been a fire ball in the rear view mirror, but was that fireball capable of expanding faster than the ships were travelling?
Pixeldance, Mass Relays overloaded one by one with short intervals for a few seconds and their "energy waves" spread with a speed about 3000-3250 light years in one second ("energy wave" reaches Its maximum radius in about 4 seconds, the radius is approximately 12000-13000 light years, meaning 12000/4 = 3000 or 13000/4=3250) in any case, this is enormous speed. Anyway If the speed of the "energy waves" were small, the Reapers would have had time to annihilate all the remote corners of the galaxy before the signal could have reached it :D
