A CITY ON MARS

An entertaining illustrated assessment of space settlement.

This book is, to put it simply, a romp. The Weinersmiths published a similar book in 2017, Soonish: Ten Emerging Technologies That'll Improve and/or Ruin Everything, and their latest deals with the practical problems of creating settlements in space. The authors, self-described "space geeks” who “love visionary plans for a glorious future,” collected a huge amount of research material for the project. They started out as optimistic about the prospects for space colonies, but the more they learned, the more they understood the staggering resource costs and the complex technical problems. Much of the recent interest in space settlements stems from the shrinking costs of putting satellites into low orbit, but this does not transfer into the cost of moving the needed materials to the moon, Mars, a space station, or another planet. Moreover, research into the long-term effects of low gravity on human biology does not bode well. The Weinersmiths have a good time discussing the difficulty of human reproduction in non-Earth environments, but for a settlement meant to be self-sustaining, it would be a real issue. An even more difficult question involves the laws that would apply, as existing treaties are clearly outdated. Despite the optimism of SF writers and the current crop of adventurous billionaires, the authors believe that space settlements would probably replicate the conflicts and divisions of Earth-bound societies: Humans, after all, remain human. Though the authors strike a humorous tone, they don’t neglect serious topics, and they do believe that one day space will be colonized. However, the timeline is centuries rather than decades, and there must be more focus on the practical realities than on visionary hyperbole. One way or another, this book has a lot to offer.

A fun, informative read that puts the pop into popular science.