ダイソン球 ダイソン球殻 ダイソン殻 ダイソン環天体 ダイソンの天球
A type of hypothetical [[megastructure]] consisting of a massive structure built around a [[star_(sky)|]] to directly harvest its energy. Typically depicted as the ultimate form of [[space habitat]].

Named after physicist Freeman Dyson.
dyson sphere