70 Years Since Trinity: The Day the Nuclear Age Began

On July 16, 1945, the United States Army detonated the world’s first nuclear weapon in New Mexico’s Jornada del Muerto desert. The test, code-named “Trinity,” was a success, unleashing an explosion with the energy of about 20 kilotons of TNT and beginning the nuclear age. Since then, nearly 2,000 nuclear tests have been performed. Most of these took place during the 1960s and 1970s. When the technology was new, tests were frequent and often spectacular, and they led to the development of newer, more deadly weapons. Since the 1990s, there have been efforts to limit the testing of nuclear weapons, including a U.S. moratorium and a U.N. comprehensive test ban treaty. As a result, testing has slowed—though not halted—and there are looming questions about who will take over for those experienced engineers who are now near retirement. Gathered here are images from the first 30 years of nuclear testing. (A version of this article first ran here in 2011.)

Read more
Hints: View this page full screen. Skip to the next and previous photo by typing j/k or ←/→.

Ads are being blocked

For us to continue writing great stories, we need to display ads.

Un-block Learn more
Back

Whitelist

Please select the extension that is blocking ads.

Back

Please follow the steps below

Most Recent

  • Czar Dancel / Reuters

    The Philippine Drug Crackdown Has Claimed 2,000 Lives in Two Months

    Rodrigo Duterte, president of the Philippines, has continued his bloody war on illegal drugs, resulting in more than 2,000 violent deaths over the past two months.

  • HVO / USGS

    Lava Flows From Hawaii's Kīlauea Volcano

    The current active lava flow (named “61g”) from Hawaii's Kīlauea Volcano began as an eruption in May, and has spent months making its way to the shoreline.

  • Mark Burns

    An Explorer’s Ode to America’s National Parks

    A 160,000-mile quest to visit all 59 of the country's natural treasures

  • Mohd Rasfan / AFP / Getty

    Photos of the Week: 8/20-8/26

    Lenin underwater, a penguin weigh-in, monsoon flooding in India, an earthquake in central Italy, a deep blue lake in El Salvador, and much more.

Join the Discussion