Image for Comet ISON approaches the Sun

Comet ISON approaches the Sun

Duration: 01:57

The tension grows as astronomers watch comet ISON approach the Sun.

Available since: Sat 23 Nov 2013

This clip is from

Horizon Comet of the Century: A Horizon Special

Documentary on Comet ISON, which was hoped to be the most spectacular comet in many years.

First broadcast: 23 Nov 2013

Image for Comet of the Century: A Horizon Special Not currently available on BBC iPlayer

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