Films set in an uncertain future, in a society ruled by an ineffectual, corrupt, or oppressive regime or by aliens, robots, etc. For films set in a world or civilization after a catastrophic event (e.g., nuclear war, an alien invasion), sometimes also including the period immediately preceding the event see Apocalyptic films.
Planetariums -- United States -- History -- 20th century. / https://id.loc.gov/authorities/subjects/sh85102646 https://id.loc.gov/authorities/names/n78095330-781 https://id.loc.gov/authorities/subjects/sh2002006165 : Marché, Jordan D.,