3 ms·

An ion thruster probably https://en.wikipedia.org/wiki/Ion_thruster https://en.wikipedia.org/wiki/Ion_thruster

• Fatnino 4y ago
  That still needs mass in the form of a gas to push against.
  • gpm 4y ago
    Such as the aforementioned water...
    • Fatnino 4y ago
      This led me to Google around a bit and I came across this slashdot article from 10 years ago with a dead link https://m.slashdot.org/story/188821 https://m.slashdot.org/story/188821 I don't know why I didn't consider h2o molecules as ion engine propellant.