EPISODE · Jun 14, 2026 · 13 MIN
The $125 Million Comma: How a Typo Crashed a Spacecraft and Changed Programming Forever
from Code Curiosities · host Podcaster
In 1962, a single misplaced punctuation mark in NASA's code sent the Mariner 1 spacecraft careening off course, forcing its destruction just minutes after launch. We explore how this legendary programming blunder led to modern software testing practices and why the most expensive typo in history wasn't actually a comma at all. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.
What this episode covers
In 1962, a single misplaced punctuation mark in NASA's code sent the Mariner 1 spacecraft careening off course, forcing its destruction just minutes after launch. We explore how this legendary programming blunder led to modern software testing practices and why the most expensive typo in history wasn't actually a comma at all.
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The $125 Million Comma: How a Typo Crashed a Spacecraft and Changed Programming Forever
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