For this 17th episode of the Arqus Knowledge Pills podcast, we head to the planet Mars! The professor Cathy Quantin-Nataf, specialist in space exploration at the University Claude Bernard Lyon 1, takes us along on her exciting Mars expeditions with both the American and the European Space Agencies, NASA and ESA respectively. In her podcast "Is there life on Mars?", she explains the interest of exploring this planet, the difficulties it involves and tells us about her role in these missions as a professor and researcher.