Apollo 12 Was Struck by Lightning Twice — 52 Seconds Into Launch
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November 14, 1969. Apollo 12 lifts off into a gray, drizzling Florida sky, carrying three astronauts to the Moon.
36.5 seconds later, lightning strikes the rocket.
The Saturn V and its exhaust plume had essentially become a 100-plus-meter lightning rod connecting the clouds to the ground. The strike knocked all three fuel cells offline. Warning lights flooded the command module — the crew later joked they couldn’t read them all fast enough.
Then, at 52 seconds, a second bolt hit — and knocked out the spacecraft’s navigation platform.
Mission Control had telemetry that looked like garbage. Nobody had trained for this. Abort seemed likely — throwing away a Moon landing and a rocket worth billions.
Then a 24-year-old flight controller named John Aaron remembered something. A year earlier, during a random test, he’d seen this exact scrambled telemetry pattern and traced it to an obscure power supply called the Signal Conditioning Equipment. He keyed his mic and gave one of the most famous commands in spaceflight history:
“Flight, try SCE to AUX.”
Almost nobody knew what it meant. The flight director asked him to repeat it. Aboard the spacecraft, astronaut Alan Bean — the only crew member who happened to know where that switch was — reached out and flipped it.
The telemetry snapped back. The fuel cells came back online. Apollo 12 sailed on to the Moon and made a pinpoint landing, and Bean became the fourth human to walk on another world.
The lesson NASA never forgot: the mission was saved not by a backup system, but by one person who had been curious about a glitch a year earlier.