When did Horizon Season 8 Episode 28 air?
Horizon Season 8 Episode 28 aired on November 22, 1971.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
This episode of Horizon reports on how the Crab Nebula was discovered, and continuing observation of the space encounter.
Direct answers for episode-level questions and details.
Horizon Season 8 Episode 28 aired on November 22, 1971.
This episode runs for approximately 60 minutes.
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