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Solar and Planetary Systems

The activities of the team are focused on three major investigations: study of the processes of evolution of the planetary bodies of the Solar System, study of exoplanets, and study of the initial conditions of the Solar System. More specifically, we attempt to study:

- evolution processes by observations of differentiated bodies (terrestrial and giant planets, satellites). These activities are performed through space instruments mounted on orbital or in situ platforms;
- the extra-solar planets by a theoretical but also observational approach through the COROT, PLATO and ARIEL missions;
- the initial conditions for the formation of the Solar System through the study of primitive matter: cometary grains, meteorites, observations of primitive bodies and the interplanetary environment.

Our approach consists in coupling the observation acquired by space instruments, extensive data reduction, numerical modeling and laboratory measurements. These multiple approaches are based on as strong and major instrumental developments with the constant concern to combine both scientific and technological challenges.

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Dernières news

1 month 2 weeks ago

The MAJIS project has reached an important milestone by delivering the main electronics (ME) to Airbus for integration into the heart of the satellite in order to be best protected from Jupiter radiation. This box allows to drive the instrument, to compress and to format the science and auxiliary data thanks to the on-board software developed by the IAS in partnership with the CNES.

2 months 4 days ago

The Astrochemistry and Origins team at IAS, in collaboration with the SMIS beam-line of the SOLEIL synchrotron, is starting the analysis of several Ryugu micrometric grains, in particular by Fourier transform infrared micro-tomography.

2 months 3 weeks ago

Cédric Pilorget, Université Paris-Saclay assistant professor at IAS, has been named a junior member of the Institut Universitaire de France. This nomination will allow him to carry on his research in planetology, on quantifying mineral abundances on planetary and small body surfaces, and to prepare future space missions.

3 months 1 week ago

On 17 June 2021, the International Space Station (ISS) will fly over the Orsay campus of Université Paris-Saclay. To mark the occasion, a radio contact lasting approximately 10 minutes will be organised with Thomas Pesquet, live from the ISS. A unique opportunity to follow the conversation between the astronaut and secondary school and university students!


3 months 3 weeks ago

JAXA's Hayabusa2 mission carried out a collection, never accomplished before, of samples of a very primitive carbonaceous asteroid, and successfully brought them back to Earth in early December 2020. The samples are now stored in the “Curation Facility” of ISAS, in Sagamihara (Japan), in ultra-clean chambers, in a controlled atmosphere, where initial analyzes are being carried out. These include a pioneer characterization by infrared hyperspectral microscopy, using the MicrOmega instrument developed at IAS, and integrated into the Curation Facility.