Aux origines de l'humanitéHalley's Comet: Once in a Lifetime
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S13 • E1 21 janv. 1986 55min8.0
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.