NASA has yet another theory to explain something in the original story of the Solar System (http://qz.com/544289/nasa-has-figured-out-how-mars-was-stripped-clean-of-water/). I agree that history is important, but science about today is always more valuable and applicable. Science without application is dead, so is faith without deeds. The reason why we study science is to enhance our engineering, just so we can protect our nation, our species and our world. History is always a second priority. That’s why NASA can always say whatever it wants without anyone caring about what it says. Solar winds stripped the Martian atmosphere? Seriously? I say Mars’ air density is about right given its air composition and equatorial gravity. Wikipedia has a comprehensive list of all gravitationally rounded objects of the Solar System (https://en.wikipedia.org/wiki/List_of_gravitationally_rounded_objects_of_the_Solar_System). You can check out their equatorial gravity and atmospheric composition for comparison. Of course, the story is somewhat complicated, because Titan with its low equatorial gravity can possibly retain a dense nitrogen atmosphere like Earth while Venus without the protection of a magnetic field can also retain a heavy carbon dioxide atmosphere, which is much easier to keep than nitrogen. Their equatorial rotational speed also matters, which explains the case of Titan.
In any case, mistakes people make. NASA is still far better than its Chinese equivalent, which blamed its failure on the nation’s overall industrial capability (https://simplyjet.wordpress.com/2015/11/05/space-technology/). Back in the 60’s and 70’s when America was at its height of space exploration, NASA was the organization to lift the nation’s overall industrial capability and not the other way around. That’s the way it works. Otherwise, why bother with space programs at all? Space is meant for national defense and national defense is not a children’s business.
Well, that’s about it. Much that must be said has been said. Space without national defense is boring at best.