When did Horizon Season 0 Episode 999 air?
Horizon Season 0 Episode 999 aired on December 13, 2015.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

In December 2015, Tim Peake became Britain’s first astronaut on board the International Space Station. For two years, he had been filming a video diary for Horizon as he prepared to leave. From family life to the rigorous training, this is an intimate portrait and remarkable insight into the world of an astronaut.
Direct answers for episode-level questions and details.
Horizon Season 0 Episode 999 aired on December 13, 2015.
This episode runs for approximately 59 minutes.
Comments coming soon
Discuss episodes with other viewers