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This week Adam and guests look back over the major science stories of 2012. And it’s been an eventful year with a robot on Mars, a transit of Venus and the discovery of the God Particle. Joining Adam to review a year in science are:

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Space scientist and one of the Â鶹ԼÅÄ Sky at Night team, Dr. Chris North from Cardiff University. Chris’s top stories of 2012 were the successful landing of the on Mars and the which occurred in June;

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Aberystwyth University aquatic biologist Dr. Pippa Moore. Pippa’s science story is climate change and its relation to the year’s events. Pippa also chooses CERN’sÌýdiscovery of a particle consistent with the long-trumpeted ‘God particle’, the ;

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Dr. Tom Crick, senior lecturer in computer science at Cardiff Metropolitan University. His favourite stories are the success of the , an affordable computer which aims to reignite schoolchildren’s interest in programming, and the launch back in March of the new .