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

Two rocket launches took place this week from Vandenberg Space Force Base, one by SpaceX that delivered another 28 Starlink satellites to its mega-constellation of 8,800 satellites currently in orbit, ...

As Russia threatens atomic attacks on Ukraine and its Western allies, and prototypes a nuclear-armed spacecraft, space powers across Europe are racing to defend against nuclear strikes in orbit.

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 ...