One thing I don't quite get is their claim that the rocket would need "just some solar panels" instead of a fuel tank when in the paragraph before that they talk about exhausting argon-based plasma.
If there is a propellant, you'd need to store that somewhere first, right? Does each particle of the propellant exit the rocket with much higher energy? Or can Argon be stored in a much denser form than other fuels?
If there is a propellant, you'd need to store that somewhere first, right? Does each particle of the propellant exit the rocket with much higher energy? Or can Argon be stored in a much denser form than other fuels?