Defense

Two new missions are revealing how robotic repair and assembly could become routine on the final frontier

A unique landform is vital for calibrating NASA’s satellites, but it’s likely sitting atop a vast deposit of this heavy metal, which is crucial for making munitions

Tungsten is a coveted metal for military uses. Restoring domestic supply could help with ongoing munitions shortages

The Pentagon has started releasing files related to unidentified anomalous phenomena (UAP), also called UFOs. Here are the images released so far

Ghost Murmur was described as a futuristic CIA tool that could detect a heartbeat from vast distances. Physicists say the public story clashes with the basic limits of magnetic sensing

Although President Trump has claimed Iran was weeks away from developing a nuclear weapon, much more work was needed for the country to do so

The Trump administration’s war with Iran over its nuclear ambitions raises new questions about the country’s uranium stockpile

As Anthropic releases its most autonomous agents yet, a mounting clash with the military reveals the impossible choice between global scaling and a “safety first” ethos

Sources say an Army antidrone laser near Fort Bliss prompted a brief FAA airspace closure—spotlighting the hazards of battlefield technology in civilian skies

“Kryptos has not been solved,” said artist Jim Sanborn after releasing his parting clues to the “K4” section of his sculpture puzzle

“The only countries that will really learn more if [U.S. nuclear] testing resumes are Russia and, to a much greater extent, China,” says Jeffrey Lewis, an expert on the geopolitics of nuclear weaponry

Russian leader Vladimir Putin claimed his nation conducted a successful flight of a nuclear-powered cruise missile. Here’s how that missile might work