retrofuturenaut: A Bernal Sphere. (if you say so) from the book Colonies in Space by T. A. Heppenheimer. With a name like Heppenheimer, it’s GOT to be good. 

retrofuturenaut: A Bernal Sphere. (if you say so) from the book Colonies in Space by T. A. Heppenheimer. With a name like Heppenheimer, it’s GOT to be good. 

tags: ~Bunny on Planet Q~,

from: https://bunnyonplanetq.tumblr.com/post/137207125385