Dr Anne Wellbrock and Professor Andrew Coates (UCL Space & Climate Physics) comment on the European Space Agency's launch of a lander bound for Mars, the precursor of a rover they are working on.
Listen: BBC Radio 2 'Vanessa Feltz' (from 1 hr 2 mins 26 secs),
Watch: BBC Two 'Victoria Derbyshire' (from 1 hr 25 mins 40 secs)
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