Many of these pictures are based on designs described in one of my favorite books of all time, The High Frontier, by Gerard K. O'Neil.
In it, O'Neil, a Princeton physicist and founder of the Space Studies Institute, goes on to describe in great technical detail the feasibility of building artificial space habitats of varying sizes. I heartily recommend it to anyone even remotely interested in space. The ideas from this book have been implemented in countless fictional universes[1], so you may find that you've seen them before.
In it, O'Neil, a Princeton physicist and founder of the Space Studies Institute, goes on to describe in great technical detail the feasibility of building artificial space habitats of varying sizes. I heartily recommend it to anyone even remotely interested in space. The ideas from this book have been implemented in countless fictional universes[1], so you may find that you've seen them before.
It all started here in this excellent book.
1. http://gundam.wikia.com/wiki/Space_colony_(UC)