Surprisingly, some Dyson spheres and ringworlds can be stable
Surprisingly, some Dyson spheres and ringworlds can be stable

phys.org
Surprisingly, some Dyson spheres and ringworlds can be stable

Surprisingly, some Dyson spheres and ringworlds can be stable
Surprisingly, some Dyson spheres and ringworlds can be stable
Googled it and was disappointed; just another borg cube thing.