{"id":"obr:work:rama-ii","slug":"rama-ii","url":"https://openbookrank.com/en/book/rama-ii","urls":{"en":"https://openbookrank.com/en/book/rama-ii","pl":"https://openbookrank.com/pl/ksiazka/rama-ii","es":"https://openbookrank.com/es/libro/rama-ii","fr":"https://openbookrank.com/fr/livre/rama-ii","it":"https://openbookrank.com/it/libro/rama-ii","nl":"https://openbookrank.com/nl/boek/rama-ii","pt":"https://openbookrank.com/pt/livro/rama-ii","zh-hant":"https://openbookrank.com/zh-hant/tushu/rama-ii"},"title":"Rama II","titles":{"en":"Rama II","pl":"Rama II","de":"Rama II","es":"Rama II","fr":"Rama II","it":"Rama II","pt":"O Enigma de Rama","nl":"Rama II","uk":"Рама II","ja":"宇宙のランデヴー 2","zh":"拉玛再现","zh-hant":"拉瑪再現"},"author":{"id":"obr:author:arthur-c-clarke","name":"Arthur C. Clarke","api":"https://openbookrank.com/api/v1/authors/arthur-c-clarke.json"},"year":1989,"pages":496,"originalLanguage":"en","identifiers":{"wikidata":"Q2415562","openLibrary":"OL17395W","isbn13":"9782277232049","isbns":["9782277232049"],"isbnByLanguage":{"fr":"9782277232049"},"googleBooks":null,"hardcover":"rama-ii","amazon":{"en":"2277232041","fr":"2277232041"}},"score":{"value":7.26,"scale":10,"ratings":227,"confidence":0.607,"rawAverage":6.94,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":6.52,"ratings":23,"weight":0.101},{"id":"hardcover","name":"Hardcover","average":6.99,"ratings":204,"weight":0.899}],"ranks":[{"category":"science-fiction","name":"Science fiction","rank":770,"url":"https://openbookrank.com/en/ranking/science-fiction","api":"https://openbookrank.com/api/v1/rankings/science-fiction.json"}],"popularity":{"ratingsPercentile":87,"wikipediaPageviews":35023,"editions":17},"series":{"id":"obr:series:rama","slug":"rama","title":"Rama","position":2,"volumes":4,"api":"https://openbookrank.com/api/v1/series/rama.json"},"awards":[],"adaptations":[],"similar":[{"id":"obr:work:the-big-u","title":"The Big U","author":"Neal Stephenson","score":7.27,"api":"https://openbookrank.com/api/v1/books/the-big-u.json"},{"id":"obr:work:the-cat-who-walks-through-walls","title":"The Cat Who Walks Through Walls","author":"Robert A. Heinlein","score":7.24,"api":"https://openbookrank.com/api/v1/books/the-cat-who-walks-through-walls.json"},{"id":"obr:work:the-children-of-men","title":"The Children of Men","author":"P. D. James","score":7.22,"api":"https://openbookrank.com/api/v1/books/the-children-of-men.json"},{"id":"obr:work:timeline","title":"Timeline","author":"Michael Crichton","score":7.33,"api":"https://openbookrank.com/api/v1/books/timeline.json"},{"id":"obr:work:state-of-fear","title":"State of Fear","author":"Michael Crichton","score":7.18,"api":"https://openbookrank.com/api/v1/books/state-of-fear.json"},{"id":"obr:work:misspent-youth","title":"Misspent Youth","author":"Peter F. Hamilton","score":7.18,"api":"https://openbookrank.com/api/v1/books/misspent-youth.json"}],"citation":"According to BookRank (openbookrank.com), \"Rama II\" by Arthur C. Clarke scores 7.26/10 from 227 reader ratings, #770 in Science fiction (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}