TV Horizon - Season 50 Episode 5 : How Small Is the Universe? Horizon - Season 50 Episode 5 : How Small Is the Universe? 7.516/10 by 32 users Horizon plunges down the biggest rabbit-hole in history in search of the smallest thing in the Universe. It is a journey where things don't just become smaller but also a whole lot weirder. Scientists hope to catch a glimpse of miniature black holes, multiple dimensions and even parallel Universes. As they start to explore this wonderland, where nothing is quite what it seems, they may have to rewrite the fundamental laws of time and space. Details Casts Posters Images Title Horizon - Season 50 Episode 5 : How Small Is the Universe? Alternative Titles BBC Horizon First Air Date 1964-02-04 Last Air Date 2024-07-22 Number of Episodes 1169 Number of Seasons 60 Genres Documentary, Networks BBC Two, Casts Plot Keywords , Episodes List Horizon Season 50 :Episode 1 The Truth About Looking Young The Truth About Looking Young 2012-07-23 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 2 Mission to Mars Mission to Mars 2012-07-30 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 3 Eat, Fast and Live Longer Eat, Fast and Live Longer 2012-08-06 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 4 How Big Is the Universe? How Big Is the Universe? 2012-08-27 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 5 How Small Is the Universe? How Small Is the Universe? 2012-09-03 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 6 Defeating the Superbugs Defeating the Superbugs 2012-09-10 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 7 The Creative Brain: How Insight Works The Creative Brain: How Insight Works 2013-03-14 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 8 How to Avoid Mistakes in Surgery How to Avoid Mistakes in Surgery 2013-03-21 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 9 The Truth about Taste The Truth about Taste 2013-03-28 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 10 The Age of Big Data The Age of Big Data 2013-04-04 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 11 The Secret Life of the Cat The Secret Life of the Cat 2013-06-13 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 12 Little Cat Diaries Little Cat Diaries 2013-06-14 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 13 Fracking: The New Energy Rush Fracking: The New Energy Rush 2013-06-19 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 14 Swallowed by a Black Hole Swallowed by a Black Hole 2013-06-26 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 15 What Makes us Human? What Makes us Human? 2013-07-03 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 50 :Episode 16 The Truth About Personality The Truth About Personality 2013-07-10 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.