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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You mean if our Sun hypothetically had enough mass to go supernova in the first place?
Because the radiation a supernova creates would travel *almost* at the same speed as the light. In our limited sensory experience, it might as well be “at the same time”. So, you’d be dead before your brain could register any change.
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