A nuclear-powered submarine from either the United States or the United Kingdom appears to have test-fired a UGM-133 Trident ...

If 26-year-old Navy Seabee Richard Legg and Army Specialists John Byrnes, 22, and Richard McKinley, 27, had known what was going to happen when they arrived at SL-1 for the first working day of the ...

Videos of Iran's missile tests circulating online highlight Tehran's defiance amid U.S., Israeli strikes and looming ...

Thank you for covering the important subject of the harms of nuclear tests (“Americans still suffer effects of nuclear tests decades later,” July 3). Although the new budget bill renews and extends ...

When the U.S. military detonated the world's first nuclear weapon near New Mexico’s Jornada del Muerto desert in 1945, people living in the nearby areas were exposed to harmful radiation. Weeks later, ...

Iran tested missiles near its capital, Tehran, showing strength amid rising nuclear tensions. Videos and photos from ...

VIENNA – The world is approaching a new record for the longest period without a nuclear test, Comprehensive Nuclear-Test-Ban ...

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

The history of North Korea's claimed nuclear tests. — -- Ahead of Vice President Mike Pence's trip to neighboring South Korea this weekend, tensions between the United States and North Korea ...

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