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 ←/→.

Most Recent

  • Mark Wallheiser / AP

    Photos: Teenagers Demand 'Never Again' in an Age of Mass Shootings

    A week after 17 people were murdered in a mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida, teenagers across South Florida, in areas near Washington, D.C., and in other parts of the United States walked out of their classrooms to stage protests against the horror of school shootings and to advocate for gun law reforms.

  • Stéphane Mahé / Reuters

    A Quiet, Ancestral Farm Life in Western France

    Reuters photographer Stéphane Mahé visited a farmer named Jean-Bernard Huon on his farm in western France, where he deliberately lives a traditional, non-mechanized farm life.

  • Guadalupe Pardo / Reuters

    Photos of the Week: Skiing Robots, a Bichon Frise Wins Best in Show

    The U.S. Toboggan Championships in Maine, scenes from New York Fashion Week, a camel trip on a Siberian steppe, and much more.

  • Adam Ferguson / The New York Times

    Nominees in the 2018 World Press Photo Contest

    The top images being considered to win awards in the 61st annual World Press Photo Contest ​have just been announced.