> And physicist George Kistiakowsky found himself certain that “at the end of the world—in the last millisecond of the Earth’s existence—the last human will see what we saw.”

I highly doubt it. The last human will likely live many years in agony, fighting disease and starvation.

The picture I find most meaningful it the one showing the back side of an instrumentation bunker with the foreground occupied by welders on skids with the broom and shovel in the dirt. Those things are essentially the same today even down to their construction. The way they are used is the same. Yet the world we live in is completely different.

What I find so strange about the awe and horror of the atom bomb, its utter power and violence, is how it was the result of decades - well, centuries - of abstract thinking in mathematics and theoretical physics. And how it required particularly new paradigms about the nature of the material world.

Imagine a cosmic being looking at the Earth through a microscope, and seeing this bubble pop on the surface in mid-20th century. Then another, and another pop. Some of them evaporated hundreds of thousands of human beings, melting and dying in gruesome ways you can't imagine in the worst nightmares of hell. Later these organisms learn to harness this destructive force for more useful and productive purposes, powering their cities and data centers for machine intelligence. And this massive amount of energy is released by breaking up the tiniest particles of matter, the nucleus of an atom, how clever and strange is that. Well, no more strange than the phenomenon of life itself, I suppose.

Some stunning images, looks like a sun plopped down in the middle of the desert.

One of my big gripes with the film Oppenheimer was the blast itself, obviously a climactic moment in the film.

It looked like someone set off a bunch of chemical explosives. That’s not how it looked in real life. Totally bizarre decision. I don’t know if they were trying to avoid effects on purpose of go gritty and retro or something but the “unearthly cosmic horror” feel of the first a-bomb blast is important. It’s what led Oppenheimer to recite “I am become death, destroyer of worlds.”

I suspect the actual first frames are still classified as they likely evidence detonator tech/performance. So the real first moments of the nuclear age will never be shown. (The high-speed cameras would have started filming shortly before the blast.)