Horizon Season 0 Episode 15 - A Close Encounter of the Second Kind

Airdate: 1992-Jul-10

Episode summary:

This Horizon special program explores what happened when the "Giotto" explorer spacecraft passed within 100 kilometres of Halley's Comet.

About Horizon series:

Series exploring topical scientific issues and their effects for the future. Horizon is the BBC2 documentary that explores and educates us about co...Show more >