Space Colonization Concept Illustration Space Colony Concept Eclipse Cylinder Endcap Cylinder Interior Cylinder Space Colony Exterior Bernal Sphere Concept Art Bernal Construction Space Colony Concept Agriculture Bernal Sphere Space Colony Concept Bernal Interior Exterior View of the Bernal Sphere Space Colony Concept Torus Model Torus Construction Space Colony Concept - Torus Interior Toroidal Space Colony Concept Exterior View of Toroidal Colony