70 years ago today: The moment the US deployed the most powerful weapon known to man

Hiroshima bombing gifPlay GIFYouTube/Amanda Macias/Business InsiderFootage of the ‘Little Boy’ attack from a bird’s-eye view.

Released from B-29 Superfortress Enola Gay on August 6, 1945 at 8:15 a.m. (Japanese time), the world entered the unprecedented atomic age with the deployment of the most powerful weapon known to man.

Born from the Einstein-inspired Manhattan Project, the first nuclear weapon used in war fell for 44.4 seconds before unleashing approximately 12,500 tons of TNT over the Japanese city of Hiroshima.

Little boy atomic bombUS Department of EnergyA model of the ‘Little Boy.’

Code-named “Little Boy,” the bomb killed 140,000 people and destroyed 90 per cent of the city.

Three days later, the US dropped another bomb on the Japanese city of Nagasaki, killing about 40,000 people instantly; thousands more would die of radiation poisoning.

Eight days later, Japan informally surrendered to the Allied forces, effectively ending World War II.

NOW WATCH: 11 game-changing military planes from the last 15 years

Business Insider Emails & Alerts

Site highlights each day to your inbox.

Follow Business Insider Australia on Facebook, Twitter, LinkedIn, and Instagram.