The next mission that didn't happen - the first from vol. 2 of my Mars trilogy (vol. 3 was just released) - is from the Vision for Space Exploration, President GW Bush's 2004 proposal. This concept was presented by Lockheed Martin in 2004 and shares something with the current lunar proposal called Endurance-A. Robotic rovers drive from 3 destinations to a human landing site in Chryse, gathering samples for the crew to return to Earth.
#maps #mars #visionforspaceexploration