http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926extraterrestrial structures http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926 single built works by location: topographical BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926 space stations NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926 extraterrestrial bases NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926 extraterrestrial buildings UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926 extraterrestrial structure UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381926 structures, extraterrestrial UF