{"id":"obr:work:a-swiftly-tilting-planet","slug":"a-swiftly-tilting-planet","url":"https://openbookrank.com/en/book/a-swiftly-tilting-planet","urls":{"en":"https://openbookrank.com/en/book/a-swiftly-tilting-planet"},"title":"A Swiftly Tilting Planet","titles":{"en":"A Swiftly Tilting Planet","de":"Durch Zeit und Raum","es":"Un planeta a la deriva","fr":"Une terre à la dérive","nl":"Machten van de duisternis","ko":"급속히 기울어지는 행성"},"author":{"id":"obr:author:madeleine-lengle","name":"Madeleine L'Engle","api":"https://openbookrank.com/api/v1/authors/madeleine-lengle.json"},"year":1978,"pages":278,"originalLanguage":"en","identifiers":{"wikidata":"Q4659923","openLibrary":"OL41492W","isbn13":"9780374373627","isbns":["9780374373627"],"isbnByLanguage":{"en":"9780374373627"},"googleBooks":null,"hardcover":"a-swiftly-tilting-planet","amazon":{"en":"0374373620"}},"score":{"value":7.7,"scale":10,"ratings":244,"confidence":0.624,"rawAverage":7.66,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":7.36,"ratings":25,"weight":0.102},{"id":"hardcover","name":"Hardcover","average":7.7,"ratings":219,"weight":0.898}],"ranks":[{"category":"science-fiction","name":"Science fiction","rank":492,"url":"https://openbookrank.com/en/ranking/science-fiction","api":"https://openbookrank.com/api/v1/rankings/science-fiction.json"},{"category":"fantasy","name":"Fantasy","rank":1171,"url":"https://openbookrank.com/en/ranking/fantasy","api":"https://openbookrank.com/api/v1/rankings/fantasy.json"}],"popularity":{"ratingsPercentile":88,"wikipediaPageviews":30900,"editions":24},"series":{"id":"obr:series:time-quintet","slug":"time-quintet","title":"Time Quintet","position":3,"volumes":5,"api":"https://openbookrank.com/api/v1/series/time-quintet.json"},"awards":[],"adaptations":[],"similar":[{"id":"obr:work:mostly-harmless","title":"Mostly Harmless","author":"Douglas Adams","score":7.71,"api":"https://openbookrank.com/api/v1/books/mostly-harmless.json"},{"id":"obr:work:the-salmon-of-doubt","title":"The Salmon of Doubt","author":"Douglas Adams","score":7.71,"api":"https://openbookrank.com/api/v1/books/the-salmon-of-doubt.json"},{"id":"obr:work:the-dolphins-of-pern","title":"The Dolphins of Pern","author":"Anne McCaffrey","score":7.72,"api":"https://openbookrank.com/api/v1/books/the-dolphins-of-pern.json"},{"id":"obr:work:river-of-blue-fire","title":"River of Blue Fire","author":"Tad Williams","score":7.72,"api":"https://openbookrank.com/api/v1/books/river-of-blue-fire.json"},{"id":"obr:work:the-shadow-of-the-torturer","title":"The Shadow of the Torturer","author":"Gene Wolfe","score":7.68,"api":"https://openbookrank.com/api/v1/books/the-shadow-of-the-torturer.json"},{"id":"obr:work:many-waters","title":"Many Waters","author":"Madeleine L'Engle","score":7.68,"api":"https://openbookrank.com/api/v1/books/many-waters.json"}],"citation":"According to BookRank (openbookrank.com), \"A Swiftly Tilting Planet\" by Madeleine L'Engle scores 7.7/10 from 244 reader ratings, #492 in Science fiction (snapshot 2026-10-29).","snapshot":"2026-10-29","license":"CC-BY-4.0"}