Since nothing travels faster than the speed of causality/speed of light, why is it said that if the sun were to explode we would not know, or see it, until we died?
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As it stands right now, whatever we see of the sun is from (roughly) 7.5 minutes ago. A star going supernova is really fast, and releases a lot of energy. By the time the supernova “wall” reaches us, the deadly heat of the Sun will have essentially cooked us alive before we get the visual effect of it.
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