This chart illustrates the routes taken by various vehicles as liquid oxygen mined on the Moon is transported back to Earth and ultimately used to fuel a variety of vehicles. Some would travel to geosynchronous Earth orbit, where communications satellites can be serviced or replaced. Other would fly the route between the Earth and the Moon, carrying liquid hydrogen to the lunar facilities and brining liquid oxygen back to the low Earth orbit facility. Pat Rawlings is the artist. (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.