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On the Dark Side
Episode 5 of 6
Professor Stephen Hawking shows how we discovered that most of the matter in the Universe is missing and looks at the possible existence of dark matter.
Last on
Thu 10 Jan 200218:30
BBC Knowledge
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Sun 28 Sep 199719:20BBC Two except East, South East & Yorkshire- Wed 24 Jan 200108:00BBC Knowledge
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- Thu 10 Jan 200218:30BBC Knowledge
