People are saying that The Pillars Of Creation have been destroyed, and will take 400-500 Million light years to reach us. Can someone explain how do we know it when the light hasn’t reached us?
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Imagine there are humans 70 light years away. They are sending us audio and video recordings, but it takes 70 years for the signals to arrive. Almost everyone in those recordings would be dead by the time we see it, and the rest would be very old. We know this, without seeing them die, because we know how far away they are and we know what a human lifespan looks like.
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