[Gondring]

An advantage of ion propulsion. It's not fast, but it goes pretty far.

'zactly! When we do something, it's good idea, but when the Euros do it, FReepers laugh?!

[RightWhale]

This was not the first ion motor to fly. The earlier ones went out to comets and asteroids. I haven't been keeping count bacause this will soon enough become the dominant motor for unmanned solar system exploration.