O’Neill Cilinders

The first two videos are uploaded by CentripetalWorlds. Both feature O’Neill cylinders, video one appears to show, the construction of an O’Neill cylinder.

Two rotating O’Neill cylinders (warning: annoying sound, please mute volume).

A different but related design, the Kalpana One:

The Kalpana One is an interesting design, and quite suitable for the first generation of space settlements (O’Neill cylinders have been considered as a second generation space habitat since they were designed).

For a technical discussion of O’Neill cylinders, by no one less than O’Neill himself, see here.

Exterior view of a double cylinder colony

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