ooliAstronomers are on the Hunt for Dyson Spheres
A Ringworld would be more likely than a Dyson sphere, the mass requirements are so much lower.
what’s ringworld?
en.m.wikipedia.org/wiki/Ringworld_series
Imagine a slice of a Dyson sphere, about one earth wide and one earth deep.
Or the halo from the game 'halo'
Yeah. Ringworld was written way before that and Dyson thought it was a cool idea. Glad to see it used in other stories.