University of Washington and Carnegie Mellon researchers have a NASA NIAC study into kilometer size structures deployable from a single SpaceX Falcon 9 launch.
They are using flexible materials which would be able to expand to 150 times their packed size.
They have made tiny prototypes of the planned materials and structures.
They have modeled the deployed structure and the final expanded state would be stable and maneuverable. They are working to ensure that there will be no issues during the deployment.
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Too limber. I want steel I beams up there
So now I'm wondering how big they could go from a single Starship launch.
I'm likely wrong about this, but maybe the announcement from China about wanting to out that huge structure up in orbit triggered some people to try and race them. Maybe interesting innovation will come out of that.
But from a single rocket? Wow. That would be quite impressive.