The U.S. Navy carried out four scheduled unarmed missile tests of the Trident II D5LE off the coast of Florida last week.

The U.S. and China possess the world's second- and third-largest nuclear arsenals, with 5,177 and 600 warheads, respectively, ...

Dive into a fascinating chapter of U.S. military science: the Nuclear Effects Branch at White Sands. From about 1974 to 1984, ...

America’s Trident D5 missiles represent a bedrock of America’s national defense—meaning that they must occasionally be tested ...

Valar Atomics and Utah San Rafael Energy Lab have begun construction of a high-temperature gas-cooled test reactor under ...

Iran has likely carried out an undeclared missile test at its Imam Khomeini Spaceport, according to satellite photos analyzed ...

The missile was launched from a specially designed rail-based mobile launcher, providing cross-country mobility.

Brunswick Nuclear Plant's outdoor warning sirens will be tested on the morning of Oct. 8 for up to three minutes between 10 a ...

The Nanjing Army Engineering University reported a successful test of a triple-nuclear strike. Bunkers can be destroyed in ...

Spacecraft have used a plutonium isotope to stay afloat for decades, but another isotope could last even longer.

Asteroid 2024 YR4 has a chance of hitting the moon. To save it from collision, scientists are considering launching a nuclear ...