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03:41
ScienceCasts: Comet ISON to Fly By Mars
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04:02
ScienceCasts: Comet of the Century
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04:19
ScienceCasts: Colliding Atmospheres - Mars vs Comet Siding Spring
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05:08
ScienceCasts: Collision Course? A Comet Heads for Mars
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03:50
ScienceCasts: Rock Comet Sprouts a Tail
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04:00
NASA ScienceCasts: The Lasting Impacts of Comet Shoemaker-Levy 9
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02:50
ScienceCasts: A Meteor Shower from Halley's Comet
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10:48
Unknown Glowing Light In Evening Western Sky - Starship? Comet? Nibiru? Hercolubus? | In5D.com
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04:08
ScienceCasts: Rosetta Comet Comes Alive
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03:34
ScienceCasts: Mission to Land on a Comet
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04:04
ScienceCasts: Pink Planet at Sunset
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03:48
ScienceCasts: Comet ISON Meteor Shower
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05:36
Inside a comet: Philae's final secret
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02:29
ScienceCasts: Meteors from Halley's Comet
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04:07
ScienceCasts: Rock Comet Meteor Shower
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03:03
ScienceCasts: Sunset Solar Eclipse
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04:05
ScienceCasts: Amateur Astronomers See Comet ISON Approaching the Sun
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02:55
ScienceCasts: Sun Grazing Comet
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03:06
ScienceCasts: Sunset Triangle
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04:12
ScienceCasts: A Naked-Eye Comet in March 2013
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03:25
ScienceCasts: Embers from a Rock Comet: The 2014 Geminid Meteor Shower
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04:06
ScienceCasts: How to Land on a Comet
