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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Excuse me for a stupid question. Astronomy is not my specialty, and I lack understanding of physics of light traveling a long distance. How long the actual destruction of The Pillars of Creation took time? I mean, if we were standing right beside and watching it. I understand that whatever event occurred in a great distance from us, it takes some time for us to witness it visually, as the light (photons) travels from the source of event to reach our receptors. But if the explosion happened in a far distance, wouldn’t the duration of that explosion be the same, just late time-wise.
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