Sven Creutzmann/Mambo Photo
- In 1978, a Soviet nuclear-powered satellite malfunctioned and crashed into northern Canada.
- Kosmos 954 spread radioactive debris across hundreds of miles, leading to an extensive cleanup.
- Reactions by the US, Soviet Union, and their respective allies marked a major moment in the Cold War.
Almost 50 years ago, a Soviet nuclear-powered satellite experienced a malfunction, fell out of the sky, and exploded over North America, scattering dangerous debris.