When did Horizon Season 36 Episode 7 air?
Horizon Season 36 Episode 7 aired on March 18, 1999.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon presents this documentary by scientists who have calculated that the Earth will be hit by a small asteroid within 50 years. How will this effect our planet?
Direct answers for episode-level questions and details.
Horizon Season 36 Episode 7 aired on March 18, 1999.
This episode runs for approximately 60 minutes.
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