After warning U.S. officials of its intention to launch, Russia lobbed a mysterious new ballistic missile—initially mistaken ...

SCIENTISTS have unveiled several options to stop 2024 YR4, an asteroid the size of a football pitch from smashing into Earth. It comes after an expert warned that the chance of the giant space ...

It has been several weeks since North Korean soldiers were spotted in Russia's southwestern Kursk region, according to Ukraine.

Since the 1990s, the United States has used science to verify its nuclear weapons are working properly. NPR was granted a rare look at how they do it.