When we reflect on iconic images of Hiroshima, Nagasaki, and their nuclear devastation, one of the first to come to mind is inevitably a mushroom cloud.

Few people, by comparison, will stop to reflect on what the bombs responsible for razing these cities to the ground โ€” codenamed Little Boy and Fat Man, respectively โ€” looked like, themselves; or that they existed, at one point in time, undetonated โ€” but chillingly patient.

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In 1945, this photograph [hi-res available here] of Fat Man on its transport carriage stood for many things. It was emblematic of a nation at war; the peak of technological and scientific innovation; and the future of international conflict. Today, however, it serves as a powerful reminder โ€” of the lives lost; of humanity's enduring relationship with warfare and weaponry; and of an ongoing history of mutually assured destruction.

Spotted on The Atlantic. Image via Wikimedia Commons.