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Replica of Fat Man Atomic Bomb

The Trinity Test

Replica of Fat Man Atomic Bomb

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Photo Galleries (6)

  • Hiroshima and Nagasaki
    Hiroshima and Nagasaki

    12 Photos

    See pictures from the bombings of Hiroshima and Nagasaki during World War II.

    (12 Photos)
  • Cold War: American Leaders
    Cold War: American Leaders

    13 Photos

    From 1945 until the fall of the Soviet Union in 1991, U.S. presidents and politicians developed strategies to limit the spread of communism.

    (13 Photos)
  • New Mexico
    New Mexico

    7 Photos

    History.com's state gallery for New Mexico. Learn more about the state symbols and famous landmarks.

    (7 Photos)
  • Harry S. Truman
    Harry S. Truman

    19 Photos

    See pictures from the life and presidency of Harry S. Truman.

    (19 Photos)
  • Franklin D. Roosevelt
    Franklin D. Roosevelt

    20 Photos

    See pictures from the life and presidency of Franklin D. Roosevelt.

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  • Axis Military Leaders
    Axis Military Leaders

    12 Photos

    View images of Axis military leaders from World War II.

    (12 Photos)

Videos (12)

  • Manhattan Project
    Manhattan Project

    Video Clip (3:09)

    Explore the top-secret American project to build the world's first atomic bomb.

    Video Clip (3:09)
  • Secret Atomic City in Tennessee
    Secret Atomic City in Tennessee

    Video Clip (3:15)

    The K-25 plant in Oak Ridge, Tennessee, was built to enrich uranium for the atomic bomb.

    Video Clip (3:15)
  • Coroner's Report: Atomic Bomb
    Coroner's Report: Atomic Bomb

    Video Clip (2:17)

    In August 1945, the United States dropped two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. What happened to people on the fringes of the blasts?

    Video Clip (2:17)
  • Einstein and the Atom Bomb
    Einstein and the Atom Bomb

    Video Clip (2:37)

    History takes a closer look at one of the greatest minds the world has ever seen. Find out what you have always wanted to know about Albert Einstein.

    Video Clip (2:37)
  • Cold War
    Cold War

    Video Clip (2:31)

    The Cold War is over, but what it left behind may surprise you.

    Video Clip (2:31)
  • Atomic Bomb Assembled
    Atomic Bomb Assembled

    Video Clip (1:22)

    Watch actual footage of the first atomic bomb being prepared by U.S. engineers in 1945.

    Video Clip (1:22)
  • Einstein: Regret
    Einstein: Regret

    Video Clip (3:18)

    History takes a closer look at one of the greatest minds the world has ever seen. Find out what you have always wanted to know about Albert Einstein.

    Video Clip (3:18)
  • K-25 Plant Produces Uranium
    K-25 Plant Produces Uranium

    Video Clip (3:25)

    During WWII the U.S. built a top secret nuclear processing plant called Y-12.

    Video Clip (3:25)
  • Atomic Test Explosions 1948
    Atomic Test Explosions 1948

    Video Clip (1:36)

    Shots of a test nuclear explosion in Hawaii. | Courtesy of the Department of Energy Nevada Operations Office

    Video Clip (1:36)
  • Atoll Atomic Test Explosion
    Atoll Atomic Test Explosion

    Video Clip (0:47)

    This atomic explosion History Channel video shows the ramifications of a nuclear test off of Hawaii. The shots are of a nuclear experiment done by the Department of Energy known as the DOE.

    Video Clip (0:47)
  • How Close was Hitler to the A-Bomb?
    How Close was Hitler to the A-Bomb?

    Video Clip (3:36)

    How close was Hitler to launching a nuclear attack against the Allies in World War II? After developing a V2 ballistic missile capable of reaching as far a New York, Hitler made nuclear development his highest priority.

    Video Clip (3:36)
  • Rare Color Films Document Atomic Bomb
    Rare Color Films Document Atomic Bomb

    Video Clip (2:44)

    An in-depth look at the events surrounding the dropping of atomic bombs on Hiroshima and Nagasaki, and ultimately, Japan's surrender in World War II.

    Video Clip (2:44)

Interactives (1)

Read More about The Trinity Test

On July 16, 1945, scientists from the top-secret nuclear development program known as the Manhattan Project exploded the first atomic bomb at the Trinity test site at Alamogordo, New Mexico.

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