Activity for Haedrian‭

Type	On...	Excerpt	Status	Date
Question	—	Is it possible to make Asteroid Concrete? In the far future, man is trying to build a small colony in the asteroid belt - on one of the bigger asteroids. All the materials are to be mined from asteroids, and it is assumed the colony will have access to mine any and all types of asteroids as needed. The question is, can we make concrete solel... (more)	—	about 5 years ago
Question	—	Reasonably housing a billion students In my world (set in the near future - no magical tech), every child after reaching the age of 1, is sent to study for 15 years in a centralised location shared by the entire world. With some playing around with numbers and assuming controlling governments having control of population, I've calculated... (more)	—	about 8 years ago