We welcomed Bob Zubrin back to the show for a one segment 88 minute discussion. We initially focused on the upcoming Mars Society Conference later this month in Pasadena but Bob also talked about the Moon, Mars, terraforming Mars, LOP-G, SpaceX, Blue Origin and planetary protection as applied to human spaceflight to Mars. Please read the full summary of this program at www.thespaceshow.com for this date, Tuesday, August 7, 2018.