> Keep in mind, the Saturn V took ~$40 Billion to build in today’s dollars and took us ~1/600th the distance. I'm tempted to stop here. Astronautical navigatio

> Keep in mind, the Saturn V took ~$40 Billion to build in today’s dollars and took us ~1/600th the distance. I'm tempted to stop here. Astronautical navigation in not a matter of distance, but of ΔV.