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?
In: 1444
Well, light *has* reached us, it’s just that it took 6,500 years for that light to get to us. Light travels at 650 million miles per hour, which is really fast. But the universe is so damn big that it still takes 4 years for light to travel to us from our closest star (not including our sun lol)This means that when you look into the night sky and see that star, you are seeing that star as it was 4 years ago.
So the pillars of creation could be gone completely for all we know, but we wouldn’t be able to see any change from our telescopes until 6,500 years *after* they stopped emitting light. So if they died 6,499 years ago, we would be able to see that change next year, because that’s how long it took for the light to reach us through the vast vast vast emptiness of space
Edit: just a cool thing taking it one further. This means that time travel *does* exist already and has for the entirety of human existence. The night sky is a window into the past where we can see thousands and millions and even billions of years into the past. The universe is fokin cule m8
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