Somewhere above Earth, natural radiation may be doing what spies cannot: probing satellites for hidden nuclear weapons. Although the 1967 Outer Space Treaty bans nuclear weapons in space, there’s ...

In August and September 1958, the United States military carried out a secret series of high-altitude nuclear tests in the ...

Earlier this month, a small satellite built by City Labs was launched to low Earth orbit aboard SpaceX’s Transporter-17 rideshare mission. The successful launch marked a milestone for commercial ...

HOUSTON—An MIT-led simulation and modeling effort offers a potential space-based method for detecting nuclear weapons in Earth orbit. Such weapons are a violation of the Outer Space Treaty (OST), ...

Gamma-ray bursts are among the most powerful explosions observed in the universe. First accidentally detected by Vela ...

For almost 60 years, the world’s most powerful militaries have agreed not to put nuclear weapons into orbit around Earth. But the Outer Space Treaty (OST), ratified in 1967 by the U.S. and Soviet ...

Technicians joined the Telstar satellite to the third stage of the Delta Rocket in July 1962. Credit: Keystone/Getty Images In August 1962, British instrumental band the Tornados released a song ...

As Russia threatens nuclear strikes on Ukraine and the West, leading arms scholars say it’s urgent to abolish nuclear weapons ...

A satellite carrying a nuclear weapon would not just menace rival spacecraft. It could scramble parts of modern life on Earth. That is the threat behind a new proposal from MIT professor Areg ...

The Pentagon is drafting a new nuclear weapons strategy to prepare for a potential conflict with China or Russia, marking a significant shift in US military tactics.

President Donald Trump could gain new tactical nuclear weapons options under a classified Pentagon strategy led by Elbridge ...