In case you have not seen this you might want to:https://www.youtube.com/watch?v=T2I66dHbSRA
This is film footage of the Castle Bravo test.
On 1 March 1954 a thermonuclear device was tested that was expected to yield a force equivalent to 6 megatons of TNT. In the event the yield was 2.5 times as great with a measured yield of 15 megatons. To give a hint of the scale of this thing, consider the yield of the Nagasaki bomb which exploded with a force equivalent to approximately 20,000 tons of TNT. The Castle Bravo device had a yield 750 times greater. The number of those killed by the Nagasaki bomb is variously estimated at 39,000 to 80,000 people; no one knows the exact number of those who died.
The film was made from a distance of approximately 50 miles.
It was the largest explosion ever produced by the United States and was at the time the largest explosion produced by human beings. The Soviet Union exceeded the United States most notably with the Tsar Bomb which had a yield of 50 megatons TNT equivalent...
These are some of the fruits of rationality.