The Most Insane Weapon You Never Heard About

In the 1950s the US began the  top secret project Sundial, most of it is still classified. The goal:  a single nuclear bomb so powerful it would destroy all of human civilization. Conceived in  cold logic from the mind of a genius scientist.

Sundial had the energy equivalent of  10 billion tons of TNT. A pyramid of explosives thirteen times taller than the  actual Great Pyramid. Three thousand more than all the bombs dropped during World  War II.

If you dropped the bomb that destroyed Hiroshima every minute, it would take you over 15 months to match Sundial. How was it even possible for us to  achieve this insane level of madness? Everything is Different Forever Let’s set the stage.

If you  were 40 in 1945 that means you were you had been born in 1905 – back  then monarchs ruled over much of the world, only 3% of homes in the US had electricity, cities  were dominated by horses, the first experimental planes had just flown. Less than a hundred  thousand soldiers died in war each year. Imagine growing up in this world and  seeing change almost too fast to keep up with.

By 1945, 24 million soldiers  and 50 million civilians had died in two world wars. And suddenly  there were TVs, microwaves, jet planes and … nuclear bombs. They kind of  broke the brains of the people alive back then.

Overnight, nowhere from the edge of space to  the bottom of the ocean was safe. It's hard for us today to understand the level  of terror this instilled in people. The implications were wild.

Without  nuclear weapons it seemed you would stand no chance in future conflicts.  Nations without that power would get trampled by those that did have it,  no matter how big their armies were. There was one brief moment where it could all  have been stopped: In 1946 the US proposed the Baruch Plan and promised to get rid of their  atom bombs, share nuclear technology with the world and set up an international authority  to make sure no-one ever builtds such weapons again.

But the military advantage of  nuclear bombs was too great to let go. Just three years later the Soviet  Union detonated their first atom bomb. This caught everyone by complete  surprise.

The Soviets were not decades behind American technology  but had just pulled even. Shock turned into fear. And fear makes people  do crazy things.

The whole concept of what war was and how it would be won was overturned  in a hot second. In a world where your enemy could fly over your soldiers and vaporise your  cities, the only answer seemed to be a nuclear arsenal that could strike faster and harder.  The nuclear arms race began.

In 1946 there were just 9 nuclear bombs in the world. In 1950  the number was 300. In 1960 it would be 20,000.

In a way the nuclear arms race was pretty daft.  One superpower would develop a powerful new bomb and detonate it. And then the other side would  build something more powerful and blow it up, and this would continue endlessly.

A dirty  and wasteful game of creating more and more horror that seemed totally reasonable at  the time. Superpowers spent trillions to have thousands of the most intelligent people  show off how hard they could destroy humanity. Fear had to be met with much greater horrors,  and one man knew how to make nightmares real.

But What if We Destroy Humanity Even HARDER? Edward Teller was a brilliant Hungarian  theoretical physicist. He was among the first people to realize that the fission chain  reaction in uranium could make a bomb.

And he helped to build it. But for Teller,  the bombs were not powerful enough. He was ready to pay any price for security. 

And to be more secure, to be less afraid, he urged that larger bombs were the  answer. Even in the 1950s this was a pretty hot take and many scientists were  appalled by his ideas. He didn’t care one bit and incessantly lobbied scared politicians  to green light more devastating nuclear weapons.

And lucky for him, his timing was just right.  Terrified by the rapid nuclear progress of the Soviet Union, he got a blank cheque from the  military to bring his most destructive fantasy to life. It took him only a few years to  make them a reality: The Hydrogen bomb.

A hydrogen bomb is so powerful that it needs  a regular atom bomb just to trigger it. It is basically a nuke, the first stage, next  to a capsule of fusion fuel, the second stage, encased by dense materials like lead.  When the atom bomb is detonated, it releases stupendousungodly amounts of  X-rays that get channelled onto the capsule.

The capsule’s surface explodes,  pushing inward and compressing the fusion fuel so violently that for  a brief moment it simulates a star. When this bomb was first tested  in 1952 it instantly erased a pacific island from the map. Two years  later he tested an even bigger nuke, 1,000 times more powerful than the Hiroshima bomb. 

The world recoiled in horror. With weapons this powerful war stopped being about winning and  total human annihilation became very real. Teller celebrated.

In just two years  he had enabled the creation of American warheads a hundred times more powerful.  He had stolen the nuclear fire from the gods and awoken cosmic horrors but he  insisted that it was still not enough. His dream was to have a bomb of almost unlimited  power.

And once again, his timing was pretty great. When the Soviet Union detonated its own  hydrogen bomb, it sparked a new wave of fear. This is where we get the top secret project Sundial.

The bomb to make all other bombs irrelevant. The Final Bomb Teller skipped right to the end. The end of the  nuclear arms race.

He wanted to build a world destroyer. Something so breathtakingly  destructive, so incredibly scary, that it made no sense to continue playing.  Almost everything about it is still classified, but what we do know about it is terrifying.

Work  on it actually began and tests were planned. Sundial wouldn’t be some warhead loaded up onto a  bomber and dropped on a target. No.

It would be a backyard bomb. After all, if a bomb can destroy the world, why bother moving it at all? No need to bring it close to your enemies,  you could as well just put it in your backyard.

Maybe it would have actually been  put in the center of the country, maybe it would have been put on a  remote island or stored on a ship, we don’t know what the actual  plans were. But this underlines how insane this weapon was and that Teller knew  exactly what he was proposing. In his mind, the rationale was the ultimate deterrence – If you  attack us or our allies we will destroy the world.

On a technical level his concept was not  even that complicated. It was probably some kind of nuclear matryoshka doll. The  truly breathtaking thing is the idea itself and that he actually attempted  to make it real.

From what we know, Sundial would have weighed at least 2000 tons,  as massive as a 250 meter long cargo train. It would explode with the power of at least 10  billion tons of TNT. A number so big it doesn’t mean anything anymore.

So let’s make this a  bit more graphic and explode it in Nevada. One wild thing about it is that humanity  never tested anything remotely like it, so this is the best speculation we  developed together with experts. For a brief moment a fireball of pure energy  appears, up to 50 kilometres in diameter, larger than the visible horizon.

It radiates blistering  heat at the speed of light. Everything within 400 km is instantly set on fire – every tree, house,  person. The energy would reach much further, but the explosion is so big that the Earth’s horizon  curves away from it.

The surrounding deserts turn into a field of glass. Then comes the blast wave.  The atmosphere above the explosion is violently shot into space, a magnitude 9 earthquake  shakes the United States while the sound of the blast reverberates around the world.

North  American forests burn, adding their soot to the bomb’s radioactive fallout to create toxic death  clouds that shroud the world like a dark curtain. Sundial is like a nuclear war happening all at  once. But it's more like a giant volcano erupting or an asteroid striking, than a nuclear war. 

Sundial would bring about an apocalyptic nuclear winter, where global temperatures suddenly drop by  10°C, most water sources would be contaminated and crops would fail everywhere. Most people in the  world would die. So uhm.

Congratulations, you won? Good News! Wait no, Bad News!

The good news is that Sundial was never  built. Most details are still top secret. But we know that scientists reacted with  horror and politicians who were secretly informed responded with disbelief. 

Even the US Military thought this was a bit much. In the insane world of  nuclear arms, this madness was too much, building it considered a crime against  humanity. And it had other problems too.

A single apocalypse weapon leaves you no wiggle  room. Would you press the button if enemy soldiers crossed a distant country’s borders or attacked  one of your distant bases? Would you end the world if your rival overthrew a friendly government? 

Can you protect an ally with a bomb that would kill them too? The elephant in the room is that  while Sundial is clearly insane – humanity still kind of did build it. At the peak of the  cold war humanity had over 70,000 nukes.

Even today we still have about 12,000 nuclear  weapons, enough to destroy human civilization. Instead of a single world burner, the  superpowers built tens of thousands of nuclear weapons of all types and sizes. Hidden  in submarines or waiting in bunkers and silos.

And this sounds so much more reasonable,  doesn’t it? But this also makes them a much more credible threat. Because if people feel  they can risk setting off a smaller nuke, they might actually get launched.

And we don’t know  what kind of chain reaction this might trigger. So in reality the difference between  Sundial and what we have today is not even that big. Humanity didn’t build a  doomsday bomb but a doomsday machine.

Today the world may be on the verge of another  nuclear arms race. The US is on track to spend a trillion dollars on nuclear modernization  programs while China is expanding its arsenal and might have more than 1000 nuclear  weapons ready to be deployed by 2030. So far we've escaped the existential threat these  weapons pose – but if an alien visited earth, it might ask us if we are ok and need  a hug.

We should ask ourselves as a species if we really want to be ready to  destroy ourselves at a moment's notice. Phew, that was a lot. Science is never inherently good or bad.

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