https://medium.com/swlh/how-lines-of-code-made-a-rocket-explode-77df73deb0a4

Story of the most expensive software bug in the world.

On a fine June 4th, 1996, just 37 seconds after the celebrated launch, Ariane 5 rocket flipped 90 degrees in the wrong direction. Mission critical alarms started banging inside mission control; off the coast of French Guiana.