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  "title": "Turning a Sphere Inside Out",
  "year": "1979",
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  "tmdbId": 1384129,
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  "directAnswer": "Turning a Sphere Inside Out (1979) is not currently listed on any UK streaming, rental, or purchase service. Last verified on 17 May 2026 by ScreenSearch.",
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    "overview": "This video is about the problem of turning a sphere inside out, by passing the surface through itself, without making any holes or creases. Mathematicians believed the problem to be unsolvable until 1958, when Stephen Smale proved otherwise. The motion of turning a sphere inside out, called a regular homotopy, is extremely difficult to visualize. The homotopy in this film was developed by Bernard Morin, a blind mathematician. The motion is illustrated with a sequence of chicken-wire models, built by Charles Pugh, showing the crucial stages in the motion. Commentary is provided by mathematicians Nelson L. Max, Stephen Smale, and Charles Pugh, and by physicist Judith Bregmann.",
    "tagline": "Unfolding the impossible: turning a sphere inside out, without a single crease.",
    "runtimeMinutes": 22,
    "genres": [
      "Documentary"
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    "tmdbRating": null,
    "tmdbVoteCount": 0,
    "releaseDate": "1979-01-01",
    "poster": "https://image.tmdb.org/t/p/w500/6MtRb1DiWKetb0vOCG2vWK09WoH.jpg",
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      "answer": "Turning a Sphere Inside Out (1979) is not currently listed by any UK streaming, rental, or purchase service in our daily-updated TMDB feed. It may be on physical media, an aggregator, or pending a UK release. Check back later — availability changes frequently."
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      "answer": "Turning a Sphere Inside Out is not currently included with any major UK subscription service. It may still be available to rent or buy."
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      "answer": "Availability is sourced from The Movie Database (TMDB), which in turn pulls from JustWatch. Listings are refreshed daily. For purchase decisions, the provider's own site is the source of truth."
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