TV Horizon - 2025 Horizon - 2025 7.4/10 by 33 users Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Details Casts Posters Images Title Horizon - 2025 Alternative Titles BBC Horizon First Air Date 1964-02-04 Last Air Date 2024-07-22 Number of Episodes 1169 Number of Seasons 61 Genres Documentary, Networks BBC Two, Casts Plot Keywords , Episodes List Horizon Season 61 :Episode 1 Confessions of a Brain Surgeon Confessions of a Brain Surgeon 2025-08-18 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.