The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United …

5 days ago · Manhattan Project, U.S. government research project (1942–45) that produced the first atomic bombs. The project’s name was derived from its initial location at Columbia University, where …

The Manhattan Project was an unprecedented, top-secret World War II government program in which the United States rushed to develop and deploy the world’s first atomic weapons before Nazi Germany.

May 12, 2017 · What was the Manhattan Project?

The advent of nuclear weapons, made possible by the Manhattan Project, not only helped bring an end to the Second World War-it ushered in the atomic age and determined how the next war, the Cold …

Find links to DOE histories of the Manhattan Project, site histories, Manhattan Project records, and exhibits.

The Manhattan Project was the Anglo-American effort to build nuclear weapons during World War II. It is commonly regarded as one of the most successful, if controversial, mega-projects of the 20th …

In 1939, the U.S. discovered that the Nazis were developing a weapon of unprecedented destructive power and began a top-secret project led by Robert Oppenheimer to beat them to it: The Manhatten …

Fearing what Hitler would do if he had such a devastating new weapon, the United States undertook the "Manhattan Project," the largest, most secretive wartime project in history. The program coordinated …

Jun 18, 2025 · The Manhattan Project is one of the most transformative events of the 20th century. It ushered in the nuclear age with the development of the world’s first atomic bombs.