Kiertoranga
Kiertoranga is a Finnish term that translates to "orbital ring" in English. It refers to a hypothetical megastructure, a large, rigid structure in low Earth orbit that encircles the planet. The concept of an orbital ring is distinct from a space elevator, which relies on a single tensile tether. Instead, an orbital ring is envisioned as a continuous loop of material held in orbit by its own rotation and supported by dynamic substructures.
The primary purpose of an orbital ring would be to provide a stable and permanent platform for
Various designs for orbital rings have been proposed, often involving a rotating ring and stationary "stators"