A nuclear explosion in space could plunge much of the world into a technological crisis, disrupting everything from satellite ...

(Wladimir Bulgar/NASA/Science Photo Library RF/Getty Images) High above your head, it's getting a bit crowded. In low-Earth ...

For over half a century, hundreds of above-ground nuclear weapons tests during the Cold War arms race between the U.S. and ...

Some estimates put the heart of Pickaxe Mountain as far as 100 meters (nearly 330 feet) underground—meaning even the most ...

A nuclear blast in space could cause significant damage. A new simulation shows how many satellites it could disable.

Iran says it is committed to non-proliferation treaty, but hardliners may be pushing for a change in nuclear policy.

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It is the first time the president has addressed nuclear weapons, but he didn’t deny US could use ‘mother of all bombs’.

Some Iranian clerics and officials argue the country must rebuild deterrence by dropping its longstanding pledge not to build ...

A group of American diplomats was riding in an Israeli helicopter in early 1960 when one of them spotted a construction site ...