For once, a story about a new kind of #spacecraft #propulsion that's *not* vaporware depending on hypothetical #physics breakthroughs! Unsurprisingly, that also means it's a lot less exciting than the stuff that gets hyped as being able to take us to the #stars. Evolutionary, not revolutionary. But still pretty neat.

https://www.popularmechanics.com/space/rockets/a60654632/next-generation-ion-thruster-nasa/