Supramundane Planets and Shell Worlds

In contrast to the low-gravitational environment that exists on Ceres, the gravitational acceleration in the outer atmosphere of Jupiter is 2.53 times greater than that experienced on the Earth. British engineer Paul Birch has suggested, therefore, that a vast honeycombed shell might be built around Jupiter at a stand-off distance of 42,000 km from the upper cloud deck. Such a suprajupiter structure, as Birch calls it, would have a surface gravity the same as that on Earth, and a surface area...