Re: Air Power was: REALITY CHECK TIME!

On or about Thu, Jul 25, 2002 at 09:29:07AM -0400, Ryan Gill typed:

>Building something massive on the surface of a planet where you don't 
>have a hostile environment and you don't have to deal with lifting 
>the parts into orbit is quite cheap compared to building things in 
>space where your transportation costs are exponentially higher.

...unless those parts are being made in orbit in the first place. If
your metals are coming from asteroids, building on the surface may well
be more expensive than building in orbit.