[Jon K.]

nasa knows that it isnt cast effective to keep launching the shuttle that is why they are looking at different things as: a.) escape vehicles for the space station and a new reusable space craft to take people to the station, some models use high voltage electric magnets to force a ship to launch sort of llike when you try to putt twoo magnets with the same polarity together they repell that is the desired affect here also they are currently reusing the two white rockets because they are refillable so even that saves money