I'm confused about this, specifically the spacetime interval.
A timelike interval is one in which 2 events can be related to each other in a given reference frame within its light cone, that is, it is an interval where the 2 events can be related by signals slower than the speed of light.
A spacelike interval is one in which an event within the frame's light cones is connected with an event outside the light cone, thus, the 2 events are entirely unrelated.
Now what I'm confused about, is that if an event happens in space (say the sun exploded) it takes the light 8 minutes to reach Earth, then it would affect Earth where there is another event inside Earth, 8 minutes later.
So that means that the sun explosion will eventually affect any event on Earth, so how are both events 'entirely unrelated'?
How I think it should be, is that the interval is spacelike before light reaches Earth then it becomes timelike once it affected Earth, is that correct? Can I have a good physical intuition about this rather than a mathematical answer, please?