Joining the style smorgasbord on a cul-de-sac in Wilchester, a 1966 home’s exterior nods to the Space Age in the city where orbits were controlled. Check out the entry portal. Wider versions of its elongated arch — would that be paraboloid or inverted catenary? — appear in the decorative pewter-toned brickwork. The elevation is one-part 1-story, one part 2-story. (The listing averages out the two sides and calls the home a 1 1/2-story.) The floor plan includes 3 or 4 bedrooms, 2 full baths, and 2 half-baths. The family room’s fireplace has an interesting configuration.