I’ve grown up with rockets that burn chemical fuel, but NASA’s next big leap in propulsion could make those engines look as dated as steam trains. By turning to nuclear power in space, the agency is ...

Kim Jong Un unveils a new 8,700-ton nuclear-powered submarine, escalating tensions in the Pacific. Learn how this stealth ...

Russian propagandists are trumpeting the “successful test” of the Burevestnik missile — a cruise missile with a nuclear-powered engine that supposedly gives it unlimited range. Similar claims of ...

North Korea state media photos showed a largely completed nuclear-powered submarine hull as leader Kim Jong Un condemned ...

The Republic of Korea Navy submarine Na Dae-Yong (SS-069) prepares to moor alongside the Emory S. Land-class submarine tender USS Frank Cable (AS 40) at the ROK Navy base in Jeju-Do, Oct. 11, 2024.

If Tokyo acquires nuclear-powered subs, it would be a significant strategic shift for the only nation to have suffered atomic bombings. In this May 31, 2025 file photo, Japan’s then-Defense Minister ...

President Vladimir Putin said on Wednesday that Russia had successfully tested a Poseidon nuclear-powered super torpedo that military analysts say is capable of devastating coastal regions by ...

Nuclear power delivers low-carbon, reliable electricity. As more countries aim for net-zero emissions, nuclear energy is increasingly seen as a crucial partner to renewable sources like wind and solar ...

For decades, Washington blocked Seoul’s desire for the attack submarines over concerns about nuclear proliferation. President Trump reversed that policy last month, but left key questions unresolved.