The US carried out the Starfish Prime test by detonating a 1.4-megaton thermonuclear bomb about 400 kilometres above Earth.

A constellation of cubesats fitted with special detectors could sniff out nuclear weapons hidden on satellites launched by ...

Space-based nuclear weapons are a serious matter, and one that deserves the very highest level of national attention.

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

There is a long-standing international treaty in place but we can't be the only ones side-eyeing world's current crop of ...

Interplanetary travel to Mars aboard nuclear-powered spaceships may sound like science fiction – yet NASA is planning to make ...

US officials have said a nuclear detonation would render portions of low-Earth orbit useless for up to a year.

Add Yahoo as a preferred source to see more of our stories on Google. Gen. Stephen Whiting, the commander of U.S. Space Command, recently made waves when he publicly discussed a major threat that ...

Gen. Stephen Whiting, the commander of U.S. Space Command, recently made waves when he publicly discussed a major threat that America’s newest military branch recently war-gamed — that of an adversary ...