Why does the ISS not have a stanford tourus-like module, where they would be able to have (partial) gravity? Were there ever any plans to add such a module in the past?

Question

Why does the ISS not have a stanford tourus-like module, where they would be able to have (partial) gravity? Were there ever any plans to add such a module in the past?

In: 2

Answer 1

because it is not strong enough. if you spun the space station, pieces would start flying off. strong things tend to be heavy and/or expensive and only one of those is workable for a space program, but there are limits and a gravity space station pushes way past what anyone can afford right now.