On Monday, March 12, 2018 at 10:22:20 PM UTC-5, a425couple wrote:
On 2/17/2018 3:09 AM, Mark Earnest wrote:
It will not take much effort to lift enough stuff from the Earth to the Moon to build a launch base to the solar system and to interstellar space.


Well, your 'not much' is quite expensive.

Not if you use airplanes that can escape the pull of gravity.