A ring or sphere could, apparently, be stable if surrounded by the right sizes and gravities of other stars.
“The candidates Matías (Suazo) has found are important because whatever ... contamination by circumstellar debris disks, ...
Have we finally found Type II civilizations ... Because of the 2nd Law of Thermodynamics, such a Dyson Sphere would necessarily radiate excess heat in the form of a strong infrared glow.
A photovoltaic Dyson sphere is a theoretical megastructure that could provide vast amounts of energy for interstellar space travel and large-scale technological endeavors.