It was the biggest aircraft ever flown, the size of four Jumbo Jets; the pride of Hitler’s Nazi air fleet. But when the airship Hindenburg exploded in a gigantic ball of fire over New Jersey in May 1937, it also became one of the most shocking images ever filmed. What caused the disaster? Was it the victim of sabotage, as the American authorities thought? A fatal flaw in its cutting-edge design? And why was the airship using hydrogen, rather than the much safer helium? Today, investigators re-examine the Hindenburg’s final moments to uncover the facts behind the story. Learn more about your ad choices. Visit megaphone.fm/adchoices