Valdoria79 t1_iqr3eft wrote
So we can observe these special relationships because we’ve managed to created relative perspective from distances that create an observable difference in events we’ve determined that everything is relative to light and gravity. Everything boils down to information. The information travels at a constant speed so distance becomes the variable. One event cannot effect another until the information has travelled between the two. Faster than light travel would again change how we interact with two forces of causality as we can change our distance to the event faster than the information can travel. All of that is useless because we can’t travel faster than the information. So we come back to causality. Basically, when the information travels out from a location, that event will cause a change to the local system and we observe that. Technically it happened when the effects are observed by us. Because we can’t travel faster then the effects. So the effect will take 649 years to reach us, in our galactic perspective, that’s when it happened. If we lived in the star system being discussed then the effect is when it reaches us
Valdoria79 t1_iqrngn0 wrote
I’d like to add that the only means we have to observe our universe are completely beholden to the light speed rule. Radio waves and light have a maximum speed that they travel. Since technically we cannot travel faster than the methods of our observation, then when we observe an event becomes the moment it happens relative to our location. If we were closer to the event it would happen sooner but if the person closer to the event tried to tell the person farther away, the information cannot travel faster then light/radio/gravity waves anyway so both sets of information would arrive to the farther person at the same time. In essence marking the event at that time in every respect. Since we don’t exist in other solar systems and we certainly don’t exist in systems 650 light years away the point is moot. In essence, when the waves of information reach you, in whatever capacity, is when the event occurs. We can say is happened 650 years ago but but since time travel is as ridiculous as faster than light travel or even approaching speed of light, it doesn’t matter anyway
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