00:00In 1962, America fired a nuclear weapon into space.
00:05What came back was something nobody could put away, a man-made radiation belt, wrapped around the entire planet.
00:42The blast was supposed to be small. The model said so. The scientists signed off on it.
00:50Then every instrument in range pegged off the scale, because the ray all yield was orders of magnitude beyond prediction.
00:59900 kilometers away in Hawaii, 300 streetlights died, phone lines went quiet, alarms screamed at nothing, and the sky glowed
01:09for six full minutes.
01:39That year, only 24 satellites circled the Earth. One test, and a quarter of them were gone.
01:47The belt did not fade in weeks. It was still there five years later.
01:54Today 11,000 satellites hang overhead, your GPS, your weather forecast, your bank transfer, every military call.
02:04Lose that layer, and your phone losing signal is the first second.
02:09Everything after that is the collapse.
02:11The waves.
02:40And the man
02:41behind it? A Greek elevator repairman named Nicholas Christophilos. No degree. No training.
02:51He fixed lifts in Athens by day and taught himself nuclear physics at night, from textbooks
02:57the Germans left behind. He mailed his ideas to American labs. Ignored once. Rejected once.
03:07He corrected the math and sent it again, and Brookhaven hired him. The press called him
03:14the crazy Greek.
03:42Music
03:44His crazy idea, detonate a bomb high above the atmosphere. Let the Earth's magnetic field
03:51catch the electrons. Build a ring of radiation around the planet, and burn out the guidance
03:58system of any Soviet missile that tried to fly through it.
04:30So in 1958, the U.S. Navy sailed nine ships into the South Atlantic and set off three warheads
04:37in a row. The belt formed. The physics was right. But it faded too fast.
05:14So in
05:15In 1962, they went bigger.
05:19Starfish Prime.
05:211400 kilotons, detonated 250 miles above Johnston Atoll.
05:28That is the altitude where the space station orbits today.
05:32Two launches failed first.
05:35Rockets lost, debris in the sea.
05:38They kept going, because it was the Cold War and nobody called it off.
06:12Then the sky lit up.
06:15No mushroom cloud, there is no air to hold one.
06:19No fireball, no oxygen.
06:22Just a flash, impossibly bright, spreading in a perfect sphere, splitting into threads
06:28of light.
06:30Aurora stretched 7000 kilometers.
06:34Honolulu hotels threw rooftop parties to watch, and one paper promised it would be spectacular.
06:41It was.
06:42Everything else was not.
07:13The electromagnetic pulse was beyond anything predicted.
07:18But the pulse was not what kept them awake.
07:21The belt was.
07:24It was far stronger than anyone expected, and it did not fade.
07:28In 1968, six years later, they were still measuring it.
07:34Telstar 1, the satellite that had just carried the first live transatlantic television, went
07:40silent in seven months.
07:42Britain's first satellite died in weeks.
07:46By the end of 1963, a third of everything in orbit was gone.
07:50Britain has done a few, five years later, and they are always J.C.
08:03Britain, a third of everything in orbit was gone.
08:07The evacuation is true now.
08:19Northern Sunday, a third of everything in orbit was gone.
08:20The superpowers finally sat down.
08:23The test banned treaty.
08:26The outer space treaty.
08:28Both still in force.
08:31But treaty text is only paper.
09:02Because today, nobody needs accuracy.
09:06No targeting.
09:08No precision.
09:10One ballistic missile that can lift a warhead a few hundred kilometers is enough.
09:15The blast does not care which satellite is yours and which is mine.
09:21It does not care if it is military or civilian.
09:25It simply takes the sky.
09:5510,000 meters of infrastructure, all hanging on a layer of physics that one bad decision
10:01could poison for a decade.
10:04A generation of brilliant minds did the careful math, and reality slapped them across the face.
10:11Starfish Prime left us one very expensive lesson.
10:44Some experiments only need to be run once.
10:47Because you cannot afford the second one.
