I read somewhere that installing a powerful magnet at one of the Lagrangian points between Mars and the Sun would be sufficient to shield Mars from the solar wi

I read somewhere that installing a powerful magnet at one of the Lagrangian points between Mars and the Sun would be sufficient to shield Mars from the solar winds that strip away the atmosphere. That would be a far cheaper and less disruptive way of keeping an atmosphere on Mars. edit: Here you go: http://www.orionsarm.com/eg-article/4851d85e0791b http://www.orionsarm.com/eg-article/4851d85e0791b