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 ...

Greg Spriggs, a nuclear-weapons physicist, breaks down nuclear-test scenes in Christopher Nolan's "Oppenheimer" for realism.

There’s never been a good method to check for violations of the Outer Space Treaty’s prohibition of nuclear weapons in space.

On 9 July 1962, during one of the most dangerous periods of the Cold War, the United States carried out one of the most ...

Elon Musk is trying to own it, competing powers are trying to fight in it and nobody seems to be regulating it. So who does space really belong to?

The Outer Space Treaty bans nuclear weapons in orbit—but we currently have no way to verify that satellites aren't carrying them.

An MIT physicist reports that there is a way to determine whether a satellite orbiting Earth is secretly carrying a nuclear ...

Add Yahoo as a preferred source to see more of our stories on Google. Theoretical physicist David J. Gross attends the 12th Breakthrough Prize Ceremony at Barker Hangar on April 18, 2026, in Santa ...