A hypothetical cube world, however, would feature six square faces and you’d only encounter up/down gravity toward the centers of these regions. As you traveled closer and closer to the edge, it would feel like you were walking up an incline and it would be difficult to stand up straight because the gravitational pull would draw you toward the center of the massive cube, which wouldn’t lie directly beneath your feet. Standing on the “edge” of this cube world would feel like standing atop a mountain range.

Contemporary cosmologist Karen L. Masters also finds the topic of cube worlds fascinating — especially the atmospheric possibilities. As she explains in Cornell’s Ask a Physicist feature, all six faces of the plant aces would boast temperate weather, centralized bodies of water and none of them would feature polar or equatorial weather. What’s more, the pointy edges of the cube would actually poke through the planet’s atmosphere like titanic mountains.