Giant Planets from the Inside-Out

<p>Giant planets acquire gas, ices and rocks during the early formation stages of planetary systems and thus inform us on the formation process itself. Proceeding from inside out, examining</p> <p>the connections between the deep interiors and the observable atmospheres, linking detailed measurements on giant planets in the solar system to the wealth of data on brown dwarfs and giant</p> <p>exoplanets, we aim to provide global constraints on interiors structure and composition for models</p> <p>of the formation of these planets.</p> <p>New developments after the Juno and Cassini missions point to both Jupiter and Saturn having</p> <p>strong compositional gradients and stable regions from the atmosphere to the deep interior. This</p> <p>is also the case of Uranus and Neptune, based on available, limited data on these planets. Giant</p> <p>exoplanets and brown dwarfs provide us with new opportunities to link atmospheric abundances to</p> <p>bulk, interior abundances and to link these abundances and isotopic ratios to formation scenarios.</p> <p>Analyzing the wealth of data becoming available will require new models accounting for the</p> <p>complexity of the planetary interiors and atmospheres.</p>