So stick a non-rotating shell around the cylinder, made of rock or other friable material, to absorb meteor impacts. And like Johanssen said in The Martian, we need air to not die. One good meteor punch and all the air drains out of the cylinder. That’s great, but possibly a little exposed. There are different designs for introducing light into the cylinder, but the one used in Heaven’s River is a fusion-powered light source on a structure that runs down the center of the cylinder. An O’Neill cylinder, at its most basic, is just a large drum, rotating around its axis to create centrifugal pseudo-gravity on the inside surface. I’ve seen a few comments that Heaven’s River is not sufficiently well described in the book, so I’ve put together this post to describe it in more detail.įirst, let’s start with an O’Neill cylinder, something most people are far more familiar with.
If you haven’t read the book yet, best stop now.
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