Minecraft wiki entry for Building_a_metropolis, associated text: Space Station You could build a place either on the ground or just under the build limit, or in the End, You could use a TNT cannon facing upwards to propel you to infinity and beyond! Remember to have a ground control and all the other stuff. You could build a fake moon out of end stone and add slimes as aliens. Make it very futuristic and have lots of redstone. You could build two: one in space and one on the ground. You need to hire astronauts. Build a 'rocket' to explore the universe.