this post was submitted on 13 Mar 2025
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[–] WoodScientist@sh.itjust.works 12 points 1 day ago* (last edited 1 day ago) (1 children)

You know what? Fuck it. Let's finally build Edward Teller's Doomsday Machine.

Teller, the 'father of the hydrogen bomb,' wanted to build something even more mad, Project Sundial, a true Doomsday Device. It relies on the principle that there really is no upper limit to how big a thermonuclear weapon can get. As long as you're willing to keep chaining stages, you can make them arbitrarily large. However, you do eventually hit a limit where the bomb is too big to deliver to a target.

However, for Project Sundial, this wasn't a problem. The idea is you would build a single nuclear device so comically powerful that it doesn't matter where on Earth you set it off. You build the thing in bunker, under a mountain, in the heart of your most closely guarded territory. It can be the size of a large building if need be; it doesn't have to be movable. In extreme form, imagine a nuclear bomb the size of a stadium.

Once you push the button on this thing, it's over. No matter where on Earth you set it off, the explosion would be so large that it would launch enough dust and debris into the atmosphere to block substantial sunlight and cool the planet. Instant nuclear winter from a single device that cannot be intercepted or shot down. And you can built it in a bunker buried so deep that no regular nuclear weapon can reach it.

It is the apotheosis of mutually assured destruction. If you threaten our existence, we retain the power to destroy everything. The entire species would be reset to c. 1500 or earlier at the press of a single button.

They did actually design the thing, though it was never built. And the details are still classified as all hell. But it is entirely possible to actually, in the real world, build a Doomsday Machine worthy of any comic book mad scientist. It is possible to build a single device that can destroy the entire world at the press of a button.

Or hell, for all we know, it's possible someone has already built one...