Thanks for all the replies. I'm still trying to fully understand most so I'll leave my follow up questions for later. This whole concept is fascinating but really hard to grasp.
I understand that this topic have been discussed many times, but I just haven't found the answer, at least one I could understand. I'm not a physicist, just curious.
I've been reading all around the internet about time dilation and SR. I understand that time dilation is real, at least when it...