This section provides an overview of the history of the Manhattan Project, the key organizations involved, the science behind the bomb, and more.
Espionage was one of General Groves' main concerns during the Manhattan Project.
France became the fourth country to possess nuclear weapons after its first test in 1960. While development was slowed by the impact of World War II, the achievements of early French research were critical for nuclear development worldwide.
“I don't believe a word of the whole thing,” declared Werner Heisenberg, the scientific head of the German nuclear program, after hearing the news that the United States had dropped an atomic bomb on Hiroshima.
Today, millions of nuclear medicine procedures are performed in the United States every year, where the legacy of the Manhattan Project lives on in the treatment and visualization of disease.
Shortly after its discovery, radiation became an invaluable part of medicine. However, people soon realized that radiation could also be extremely dangerous.
The Manhattan Project produced a large number of radioactive substances, and as a result scientists intensified research into the overlap of nuclear science and medicine.
As scientists decided which materials they would use to build the early nuclear reactors, some staked their country’s nuclear programs on small amounts of a substance practically indistinguishable from water.
A detailed timeline of the bombings of Hiroshima and Nagasaki.
A list of the planes and the crews that flew on the Hiroshima and Nagasaki bombing missions.