1. The problem: If the Sun blows up at some instant and four minutes later we on Earth sit down to eat lunch, these two events are separated by a spacelike interval. The explosion of the sun cannot have influenced us at the time we sat down because it takes 8 minutes for light to reach us from the Sun. Since the interval is spacelike there must be a reference frame in which the two events are simultaneous. Find the speed of this frame relative to the Sun-Earth rest frame. My attempt: So I know that two events spacelike, there is a frame where they happen simultaneously. This frame will have a velocity, v>c. In the above situation, for a person on earth to experience sitting down and seeing the sun blow up at the same time, they either need to sit down 4 minutes later or for the sun to blow up 4 minutes later as Δt = 4 minutes in the frame. I want to find the frame where Δt = 0. Thus I need a time delation of 4 minutes....? The only thing I can think of in terms or equations is t' = γt and find V where t =1s and t' = 241s (4*60)But that gives me a V < C which I know isn't right. Can anyone suggest some equations or if my train of thought is wrong?