I haven't paid much attention to these areas in a while, but I would start here: http://en.wikipedia.org/wiki/Non-rocket_spacelaunch http://en.wikipedia.org/wik

I haven't paid much attention to these areas in a while, but I would start here: http://en.wikipedia.org/wiki/Non-rocket_spacelaunch http://en.wikipedia.org/wiki/Non-rocket_spacelaunch