The Manhattan Project
The Manhattan Project was the secret World War II research program that developed the first nuclear weapons, permanently changing the nature of global warfare and diplomacy.
Drawing together an extraordinary concentration of scientific talent under conditions of total secrecy, this wartime program achieved in just a few years a scientific breakthrough that would define the remainder of the century.
A Race Against Nazi Germany
The project was launched partly out of fear that Nazi Germany might develop nuclear weapons first, drawing on research by physicists including Albert Einstein, who had warned President Roosevelt of the danger.
An Unprecedented Scientific Effort
The project brought together thousands of scientists and workers at secret facilities, most notably Los Alamos, New Mexico, representing one of the largest and most secretive scientific undertakings in history.
The First Successful Test
The project achieved the world's first successful nuclear detonation at the Trinity test in July 1945, demonstrating the immense destructive power of the new weapon.
Use Against Japan
The resulting atomic bombs were dropped on the Japanese cities of Hiroshima and Nagasaki in August 1945, hastening the end of World War II while introducing humanity to the nuclear age.
A Permanent Shift in Global Power
The Manhattan Project's success ushered in the nuclear age, fundamentally reshaping global military strategy and diplomacy for the remainder of the 20th century and beyond.