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21/07/2015
Professor Stephen Hawking launches a ten year search for extra terrestrial life, how Donald Trump's controversial moments affects his ratings, and Rhod launches a hitch hiking robot called Hitchbot on a journey across the states.
Last on
Tue 21 Jul 201501:00
BBC Radio 5 Live
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- Tue 21 Jul 201501:00BBC Radio 5 Live
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