|
Somebody doesn't quite understand that the "space elevator" is from surface to low Earth orbit, not to the moon. The savings comes from having this sky-hook get mass to orbit with far less expenditure of energy than pushing it up with a rocket. From LEO, departing from higher in the gravity well takes, well, a lot less gas to do.
__________________
Wanna stop school shootings? End Gun-Free Zones, of course.
|