Mars: The new space race

NASA's Mars Perseverance rover is currently sending extraordinary images back to Earth from the surface of Mars, with a Chinese spacecraft set to join it in a few months' time. We speak to Jean-Yves Le Gall, Director of France's CNES (National Centre for Space Studies), about his hopes for the latest Mars missions, his scepticism that humans will be colonising the red planet in the near future, and why the Moon is as relevant to space exploration as ever.