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Comet Siding Spring speeds past Mars

Rare comet comes close to Mars; the hunt for an Ebola vaccine; memories of Studio 54

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55 minutes

Last on

Sun 19 Oct 201420:05GMT
BBC World Service Online

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  • Sun 19 Oct 201420:05GMT
    BBC World Service Online

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  • Newshour

    Interviews, news and analysis of the day’s global events.