TV Horizon - Season 43 Episode 19 : We are the Aliens Horizon - Season 43 Episode 19 : We are the Aliens 7.516/10 by 32 users Clouds of alien life forms are sweeping through outer space and infecting planets with life – it may not be as far-fetched as it sounds. The idea that life on Earth came from another planet has been around as a modern scientific theory since the 1960s when it was proposed by Fred Hoyle and Chandra Wickramasinghe. At the time they were ridiculed for their idea – known as panspermia. But now, with growing evidence, it's back in vogue and even being studied by NASA. Horizon meets the scientists on a mission to get to the bottom of the beginnings of life on Earth - from the team in Texas who are lovingly building a robotic submarine called DEPTHX to explore a moon of Jupiter, to Southern India where they are investigating a mysterious red rain which fell for two months in 2001. According to local scientist Godfrey Louis, the rain contains biological cells unlike any he had seen before – with no DNA and the ability to replicate at 300°C. Louis has come to the conclusion that the cells are extra-terrestrial in origin. Details Casts Posters Images Title Horizon - Season 43 Episode 19 : We are the Aliens 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 43 :Episode 1 Space Tourists Space Tourists 2006-01-12 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 2 Waiting for a Heartbeat Waiting for a Heartbeat 2006-01-19 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 3 A War on Science A War on Science 2006-01-26 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 4 The Lost City of New Orleans The Lost City of New Orleans 2006-02-02 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 5 Most of Our Universe Is Missing Most of Our Universe Is Missing 2006-02-09 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 6 Winning Gold in 2012 Winning Gold in 2012 2006-03-18 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 7 The Woman Who Thinks Like a Cow The Woman Who Thinks Like a Cow 2006-06-08 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 8 The Genius Sperm Bank The Genius Sperm Bank 2006-06-15 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 9 Bye Bye Planet Pluto Bye Bye Planet Pluto 2006-06-22 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 10 We Love Cigarettes We Love Cigarettes 2006-06-29 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 11 Nuclear Nightmares Nuclear Nightmares 2006-07-13 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 12 Tutankhamun's Fireball Tutankhamun's Fireball 2006-07-20 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 13 Survivors Guide to Plane Crashes Survivors Guide to Plane Crashes 2006-10-03 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 14 Chimps are People Too Chimps are People Too 2006-10-10 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 15 The Worlds First Face Transplant The Worlds First Face Transplant 2006-10-17 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 16 Human v2.0 Human v2.0 2006-10-24 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 17 The Great Robot Race The Great Robot Race 2006-10-31 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 18 Pandemic Pandemic 2006-11-07 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before. Horizon Season 43 :Episode 19 We are the Aliens We are the Aliens 2006-11-14 Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.