Brin-l Digest, Vol 381, Issue 3

[Alberto Monteiro]

Keith preached:
> 
> There is plenty of energy around if we can figure out how to get 
> it.  For example, a solar power satellite repays the energy needed 
> to lift it to GEO in about a day (at 100% efficiency).  Five percent 
> efficient rockets would replay the lift energy in 3 weeks.
>
This is almost surely wrong. Did you do the math?

Alberto Monteiro