Comment Re:Beaming energy (Score 1) 351
> To beam energy to a vessel, you have to cross the atmosphere. Methinks
> you're not just going to only heat up the vessel.
The current shuttle burns propellant and thereby heats the atmosphere.
All rocket propellants come out at high temperatures, and heat the atmosphere.
Even just sitting somewhere heats the atmosphere by your body heat!
So of course anything we do will heat the atmosphere a little, but even if the system is 5% efficient, it's going to (1) be cheaper (2) prove more useful, and (3) cause less atmospheric heating than anything we have at the moment.