@amazeifystore: A hatch that opened inward. A fire that spread in seconds. 🔥 During Apollo 1’s ground test, pure oxygen under pressure helped the cabin fire grow rapidly, while the pressure held the hatch shut. Investigators never confirmed the exact ignition source, though electrical arcing was considered probable. What should engineers consider when designing for emergencies? #Apollo1 #EngineeringHistory #NASAHistory #SpaceHistory #FireSafety #AerospaceEngineering #Engineering