Hollister (Hop) David has several images worth seeing at his website. He argues for using Earth-Moon Lagrange Point 1 as an interplanetary hub. Moving from LE1 has several advantages: not only can you park outside of Earth’s gravity well without millions of piece of space junk flying about, but you are close to the moon where you can pick up water or other needed supplies.   EML1 and 2 (just above.. Read More