Nice try, but no cigar. That programme is far too expensive. Then there are the implications of large numbers of multigigawatt lasers. It was also not clear why you go to the expense of developing Skylon just to launch the first satellite. On Tuesday, October 15, 2013, Keith Henson wrote: > http://youtu.be/qCiw99yRBo8 > > Talk I gave at Google in July. > > Keith > >