No. Getting into space (starting at 100 km) is relatively easy. Staying in space, i.e. reaching orbit, is the hard part, because you need a very high speed to d

No. Getting into space (starting at 100 km) is relatively easy. Staying in space, i.e. reaching orbit, is the hard part, because you need a very high speed to do this. xkcd's what-if #58 sums it up pretty well. But even then, 15 km would only be ~5% of a typical low earth orbit (LEO) of 300 km, so ... yeah, not worth it at all. This tower seems like a truly useless project. [1] http://what-if.xkcd.com/58/ http://what-if.xkcd.com/58/