NASA’s push for a new nuclear rocket engine is not just another upgrade to the hardware we strap to the bottom of spacecraft.

Reaching Alpha Centauri within a single human lifetime has long sounded like science fiction, yet a new generation of nuclear ...

They're called ghost particles for a reason. They're everywhere—trillions of them constantly stream through everything: our ...

How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's ...