by Jeff Cunningham
Mankind’s journey out into the black has been goaded on by many great thinkers: some, storytellers who craft amazing and fantastical worlds of science-fiction that we yearn to attain, while others are visionary scientists who challenge us with ambitious plans of how that might be achieved (while some, like Robert Heinlein, dabble in both). I’d like to change tack today and look at the latter category.
Over twenty years ago, Robert Zubrin wrote The Case for Mars, the book that inspired me as a young man (and many others, I’m sure) to grow up to study and become an engineer. It’s remained a bestseller in publication ever since, undergoing new revisions/editions every few years or so as new scientific discoveries about the red planet are revealed. More rarely, he’d add a note or two about some development in space policy or the industry that he felt worthy of note. Then, a few years ago, the “SpaceX revolution” broke onto the scene, with the advent of dramatically reduced launch prices and reusable vehicles, and it begged the question of whether Zubrin would revisit his thesis in light of these developments. The Case for Space, published in 2019, is his answer. But does it measure up to the pivotal, groundbreaking volume that started it all for so many of us?
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Take Back the Sky 
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