http://www.iflscience.com/space/back-future-spacecraft-turns-orbital-junk-fuel

With an increasing amount of space junk scientists have found a way to use this space junk as fuel for a spaceship just as the DeLorean from "Back to the Future."  I wonder if these will create 1.21 gigawatts in power? They would do this by heating the debris to a high temperature into a plasma of positive ions and electrons. Using a net to catch the debris a rotating cylinder to grind into a powder then heated and passed through an electric field to create thrust.  This would allow for longer space missions and therefore much more research could be done.