No main cast listed for this episode.
NOVA — S13E1
Episode: Halley's Comet: Once in a Lifetime
Air Date: 1986-01-21
Runtime: 55 min
Overview
NOVA observes worldwide preparations as amateur comet hunters, astronomers and scientists armed with specialized cameras, high powered telescopes and spacecraft look to the heavens in search of the expected arrival in 1986 of Halley's Comet.