20 Sep 12
b'
Dr Rhod and Dr Karl are joined by Professor Geraint Lewis, an expert on Astrophysics, Cosmology, Black Holes, Relativity and a huge number of other things.
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b'
Dr Rhod and Dr Karl are joined by Professor Geraint Lewis, an expert on Astrophysics, Cosmology, Black Holes, Relativity and a huge number of other things.
'