Horizon - Full Series Information, Trailer & IMDb Reviews
Horizon Season 22 Episode 17
Episode Title: Halley's Comet - The Apparition
Genre:
Documentary
Countries:
UK,
Airing Date: May 20, 1985
Runtime:50 mins
IMDb Rating:
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Horizon: This report by Horizon looks into how the apparitions of Halley's comet came to be predicted so accurately.