Horizon
S00E16
S00E1660 min· aired 7/10/1992
A Close Encouter of the Second Kind
TMDb0.0
Overview
This Horizon special program explores what happened when the "Giotto" explorer spacecraft passed within 100 kilometres of Halley's Comet.
This Horizon special program explores what happened when the "Giotto" explorer spacecraft passed within 100 kilometres of Halley's Comet.