A Soviet Nuclear Reactor Fell From Space — And 10% Was Never Found

On January 24, 1978, a Soviet satellite carrying a nuclear reactor fell from space and scattered radioactive debris across northern Canada. The satellite was called Kosmos 954. It was part of the Soviet Union’s Cold War ocean surveillance program, powered not by solar panels, but by a nuclear reactor containing enriched uranium. When the satellite lost control, it re-entered Earth’s atmosphere over Canada — and what followed became one of the largest radioactive debris searches in history. This is the story of the Soviet nuclear satellite crash, Operation Morning Light, the diplomatic fight that followed, and the dangerous question still hanging over the event: what happened to the 10% of debris that was never found? Subscribe for more forgotten Cold War history, government secrets, and real events that sound too unbelievable to be true.