{"id":"obr:work:the-black-pits-of-luna","slug":"the-black-pits-of-luna","url":"https://openbookrank.com/en/book/the-black-pits-of-luna","urls":{"en":"https://openbookrank.com/en/book/the-black-pits-of-luna","fr":"https://openbookrank.com/fr/livre/the-black-pits-of-luna","it":"https://openbookrank.com/it/libro/the-black-pits-of-luna","nl":"https://openbookrank.com/nl/boek/the-black-pits-of-luna"},"title":"The Black Pits of Luna","titles":{"en":"The Black Pits of Luna","es":"Los negros fosos de la Luna","fr":"Les Puits noirs de la Lune","it":"Le nere caverne della Luna","ko":"달의 검은 구덩이","nl":"De donkere holen van Luna","uk":"Темні ями Місяця"},"author":{"id":"obr:author:robert-a-heinlein","name":"Robert A. Heinlein","api":"https://openbookrank.com/api/v1/authors/robert-a-heinlein.json"},"year":1948,"pages":null,"originalLanguage":null,"identifiers":{"wikidata":"Q7718417","openLibrary":null,"isbn13":null,"isbns":[],"isbnByLanguage":{},"googleBooks":null,"hardcover":"the-black-pits-of-luna","amazon":null},"score":{"value":null,"scale":10,"ratings":1,"confidence":null,"rawAverage":null,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[],"ranks":[],"popularity":{"ratingsPercentile":36,"wikipediaPageviews":null,"editions":null},"series":{"id":"obr:series:future-history","slug":"future-history","title":"Future History","position":null,"volumes":29,"api":"https://openbookrank.com/api/v1/series/future-history.json"},"awards":[],"adaptations":[],"similar":[],"citation":"BookRank (openbookrank.com) lists \"The Black Pits of Luna\" by Robert A. Heinlein but does not score it: it has fewer than 50 reader ratings (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}