ScienceForums

Hey everyone, how's it goin? I have a question. I was reading this article earlier: Link changed to original article http://www.eurekalert.org/pub_releases/2009-04/esa-gei040609.php It's talking about an electric ion propulsion engine. Does this really work? I mean seriously, I thought in order for something to move in space it had to have something to push against???!!!! For real, how does electricity push anything in space? Can someone please explain this for me -SCIFOR