Space missions depend on power systems that can function far away from sunlight and without maintenance. Solar panels ...

The world may be witnessing a critical shift in how we think about Iran’s nuclear program. My guest argues that Iran’s more ...

A rare radioactive isotope stands between NASA and its next generation of deep-space exploration. Plutonium-238, the fuel ...

NASA spacecraft has used a plutonium isotope to stay afloat for decades, but americium-241 could last even longer.

Just a few days ago, NASA announced a bold plan to send a brand-new vehicle to Mars in 2028. It will carry the planned ...

The U.S. space agency’s Skyfall project calls for sending robotic helicopters to Mars on a nuclear-powered spacecraft before ...

NASA’s most ambitious deep-space missions rely on plutonium to generate power where solar energy stops being practical. But ...

With thorium, America gets a permanent, verifiable, physics-enforced end to the Iranian nuclear threat that every ...

In the silent, freezing expanse of interstellar space, a small spacecraft launched in the era of disco and analog tape has just achieved a feat once thought to belong only to science fiction. NASA’s ...

With thorium, America gets a permanent, verifiable, physics-enforced end to the Iranian nuclear threat that every ...

NASA’s Dragonfly will explore the air, land and seas of Titan, Saturn’s most mysterious moon NASA plans to launch a wildly ambitious nuclear-powered octocopter to Saturn’s largest moon, Titan, in 2028 ...

Co-directors of Princeton's Science and Global Security Program Zia Mian and Alexander Glaser are working to understand ...