‘Explosion’ noises heard in Huntsville area are rocket engine hotfire tests, officials say

Officials with Redstone Arsenal say the loud noises were caused by scheduled rocket engine hotfire testing in the area.
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The Soviet N1 rocket disaster, how a 30 engine moon rocket caused the largest non nuclear explosion ever

In July 1969, the Soviet Union’s N1 moon rocket ignited all 30 engines and detonated on the launch pad, creating one of the most powerful non nuclear explosions in history. This is the story of how a ...