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Comet Encounter

Comet of the Century

Special | 54m 41s

In this program, scientists around the world follow a once-in-a-lifetime event, the path of the sun-grazing comet ISON. The comet, somewhere between one and 10 kilometers in diameter, is currently just beyond the orbit of Jupiter. As it races past Earth toward the sun, it will likely develop a tail to light up the night skies.

Aired: 11/20/13

Expired: 03/16/15

Rating: NR

Video has closed captioning.

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