Since the atomic bombings of Hiroshima and Nagasaki, nuclear weapons have been detonated over 2,000 times for testing and demonstration. Only a few nations possess such weapons or …

NUKEMAP is a website for visualizing the effects of nuclear detonations.

6 days ago · Atomic bombs work with nuclear fission. Two subcritical masses of uranium or plutonium are quickly put together to form a critical mass —that is, enough material to start a …

Jan 15, 2024 · Interactive nuclear explosion simulator with scientific accuracy. Comprehensive nuclear education covering nuclear weapons, nuclear technology, nuclear policy, and nuclear …

Explore research and data on nuclear weapons. By: Bastian Herre, Pablo Rosado, and Max Roser. This page was first published in August 2013 and last revised in February 2024. The …

Comprehensive overview of the United States's nuclear weapons program. Detailed data on warhead inventory, deployment status and nuclear capabilities.

Jun 18, 2025 · Nine countries currently either say they have nuclear weapons or are believed to possess them. The first to have nuclear arms were the five original nuclear weapons states — …

11 hours ago · Multiple nations around the world have access to nuclear weaponry, but Donald Trump has sparked concern after announcing the US would be resuming testing theirs. In late …

Jan 29, 2025 · The U.S. still needed to ensure that its nuclear weapons were safe and reliable, so nuclear weapons scientists and engineers embarked on a new program to test the nukes …

Sep 6, 2017 · Scientists first developed nuclear weapons technology during World War II. Atomic bombs have been used only twice in war—both times by the United States against Japan at …