In children's drawings, all houses have chimneys, all monkeys eat bananas, and every rocket is a V-2. Even after decades of stepped-back multistage behemoths, chunky orbiters, and space planes, the midcentury-modern Enterprise, the polyhedral bulk of Imperial star destroyers and Borg cubes, the Ortho-Cyclen disk of Millennium Falcon - in our deepest imaginations the surest way to the nearest planet remains a trim cigar tapering to a pointed nose cone, poised on the tips of four swept-back axial fins.