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  2. What do we know about Mars’ interior?

    Publishing date:

    November 26, 2018

    The first missions to reach the surface of Mars date back 40 years, but many mysteries still lie beneath its top layer of iron oxide. To delve deeper into the red planet, the InSight lander is carrying a system able to drill down to five metres and sound Mars’ surface over a radius of thousands of kilometres. Following its arrival on Mars, we talk about what we already know and what we hope to discover there with CNES’s Francis Rocard, head of Solar System Exploration programmes, and Philippe Laudet, SEIS project leader for InSight and head of the agency’s Astronomy and Astrophysics programme.

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  3. Juno unveils some of Jupiter's secrets

    Publishing date:

    July 3, 2017

    NASA’s Juno probe has been studying Jupiter’s structure and composition since July 2016. Its orbital trajectory brings it between the planet and its rings at an altitude of 5,000 km. During its mission, it will complete a total of 32 orbits before dropping into the planet’s atmosphere in 2021. Several papers have just been published about the first 2 flyovers. Tristan Guillot is an astrophysicist at the Observatoire de la Côte d’Azur in Nice, France; he co-authored 3 of these papers and helps us understand the probe’s first results.

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