Ahead of the International Day against Nuclear Tests on August 29 2018, we met up with British atomic veterans who were ...

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

NASA visualization showing a cross-section of Earth's Van Allen radiation belts. (NASA/Goddard Space Flight Center Scientific ...

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

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 ...

On August 6, 1945, the US bomber Enola Gay dropped the first atomic bomb ever used in military combat on the Japanese city of ...

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

A top Trump administration official on Tuesday disclosed new details to support its claim that China conducted an underground nuclear explosion during Donald Trump’s first presidency, a contested ...

When Iran’s covert nuclear program came to international attention over two decades ago, Tehran insisted that its intentions were peaceful and that it had no plans to develop weapons. The country’s ...

The USS Scorpion vanished in 1968 with 99 men, a nuclear reactor, and two nuclear weapons. The Navy still has no definitive ...

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