In the pre-dawn dark of July 16, 1945, a searing flash lit up the New Mexico desert. A shockwave followed, rippling outward across the silent plains. This was Trinity — the world’s first nuclear ...

The hydrogen bomb, unlike the atomic bomb used on Hiroshima, generates energy through fusion by fusing isotopes of hydrogen, deuterium and tritium. This fusion process requires extremely high ...

On August 6, 1945, the sky above the Japanese city of Hiroshima opened. A blinding flash, then a deafening sonic boom. An entire city pulverized in seconds. Thus began the nuclear age. Today, 80 years ...

On Nov. 13, 1972, Terry Christensen was working in his office at Dixon Inc. on Orchard Mesa when he, like others, “felt the tremor.” He added. “We went out and saw the smoke. We saw a mushroom cloud, ...

A 100-ton explosive test occurred at Trinity Site on May 7, 1945, as a rehearsal for the atomic bomb test. The 100-ton test was largely unnoticed, unlike the July 16 atomic bomb test which was seen as ...

In the wake of the blast, these eerie shadows were left etched into surfaces across the city—almost like a photo negative of those who were lost. When the atomic bomb detonated over Hiroshima, it left ...

Many Americans—including students in the History of the Atomic Bomb course taught at the University of Texas at Austin by Bruce J. Hunt, A&S '84 (PhD)—have learned a version of this story: On Aug. 6, ...

The first reports were met with disbelief. A single bomb with the explosive force to level a city; a bomb, detonated with such intensity it burned as bright as — maybe, even brighter than — the sun.

HIROSHIMA, Japan — For more than half a century, chimes have rung out across the Japanese city of Hiroshima every morning at exactly 8:15. The solemn ritual marks the precise moment Aug. 6, 1945, when ...

VIENNA (AP) — The United States and Russia have both recently threatened to resume nuclear testing, alarming the international community and jeopardizing a global norm against such tests. Experts say ...