Why have there not been more studies into using railgun-like technology to fire large mass objects like satellites, fuel and raw building materials into space to use there? Something like a monorail bullet train on speed (traveling in a large looped track under vacuum to gain speed and then being ejected to a very big ramp for the shoot up into the sky) You could even build up speed gradually so even sensitive equipment such as satellites wouldn't have to suffer from acceleration. How fast should a streamlined package need to go if you fire it up that way? Anyone?