O'Neill Cylinders space stations are examples of large rotating habitats able to be constructed in space in which people and even a complex ecology might be transplanted. But what would it be like ...

There once was a dream of cities in space — vast cylindrical habitats, self-sufficient and populated by millions who would look down on the Earth from their lofty perch. Back in the 1970s, one serious ...

They might've looked something like the space station in the film "2001: A Space Odyssey." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There ...