If Humanity Discovered That Earth Would Be Destroyed In 400 years, What Would Humanity do?
...But at some point, someone would run the numbers and discover that yes indeed, we were facing the possibility of a celestial collision. At this point, they would only be thinking in terms of probabilities and not certainties. But after they shared their findings with other astronomers, gradually a general consensus would form, that the celestial body did not represent a mere possibility of colliding with Earth, but that it almost certainly would.
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