The European Space Agency, which launched the Rosetta mission, is preparing for an event in Germany to mark the spacecraft's arrival at an icy comet.
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The last day of the inquiry into Alexander Litvinenko's murder has heard that Vladimir Putin should be held responsible for his death.
American philanthropists have pledged to match new donations up to $100,000 to the research team who had been tracking Cecil since 2008.
As our Changing Minds series on mental health comes to an end, we take a look back at the stories which made the news this week.