noun
Dyson sphere
A hypothetical megastructure that completely surrounds a star to capture its energy output. Used in physics and science fiction contexts.
ダイソン球は、高度な宇宙文明の証拠として議論されることがある。
Dyson spheres are sometimes discussed as evidence of an advanced space civilization.
From English 'Dyson sphere', named after physicist Freeman Dyson.