More than seventy years ago, the world changed forever when an American B-29 bomber, the Enola Gay, dropped the first atomic bomb, "Little Boy," over the Japanese city of Hiroshima, during World War II, on August 6, 1945. The bomb wiped out 90 percent of the city and instantly killed an estimated 80,000 people.
Three days later, the U.S. dropped a second bomb, "Fat Boy," on Nagasaki killing an estimated 40,000 on August 9. Tens of thousands died later in both cities from the effects of the nuclear bombs. Their destructive power was unprecedented, incinerating buildings and people, and leaving lifelong scars on survivors, both physical and psychological, and on the cities themselves.
Days later, World War II was over. Japan's Emperor Hirohito announced his country's unconditional surrender on August 15, 1945, describing the devastating power of "a new and most cruel bomb."
These two photographs show the Atomic mushroom cloud over Hiroshima and aim point.
Museum of World War II Boston
By CBSNews.com Senior Photo Editor Radhika Chalasani