Horizon
Horizon is a documentary on BBC4. Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. The popular program has been available since 2024. A total of 9 episodes have been broadcast, most recently in April 2025.
Last episode
Horizon
The remarkable story of how Hubble revealed the awe and wonder of our universe and how a team of daring astronauts risked their lives to keep it working.
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Documentary investigating the use of modern medical technology to scan Egyptian animal mummies from museums across the world.
Episodes 2024
Film telling the story of the race to discover the structure of DNA. Watson and Crick have the bright ideas and the will to win. But there's one little problem: Rosalind Franklin has the crucial data.
Documentary which follows the everyday people battling in the most extreme environment on earth to move Halley VI, a vital polar research station.
The incredible story of how Pluto has been propelled from an unremarkable ball of ice on the edge of the solar system to a world of unimaginable complexity - where some form of alien life might exist.
BBC weatherman Peter Gibbs makes an emotional return to Antarctica, years after he lived and worked at the British Antarctic Survey's Halley Research Station.
Series exploring topical scientific issues. A look at the fledgling field of extraterrestrial meteorology, as technology allows astronomers to study other planets in new ways.
With the dream of sending humans to Mars closer than ever before, Horizon asks the world's leading experts on Mars where they would go and what they would need to survive.
Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system.