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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

9 years 7 months ago

Two months prior to its separation, descent, and landing on the Churyumov-Gerasimenko nucleus, the Philae lander of the ESA Rosetta mission delivers its first images of the comet. The 7 micro-cameras of the CIVA instrument, designed and developed under IAS responsibility, will acquire the full 360° panorama of the landing site.
 

9 years 12 months ago

After a ten-year-long interplanetary journey, Rosetta finally approaches its final destination, the nucleus of the comet Churyumov-Gerasimenko, on which the Philae module will land in November. The CIVA imaging system, designed to obtain a stereoscopic panoramic view of the surface of the comet after the landing of Philae, has just been turned on successfully, after years of hibernation, at a distance of more than 600 million km from the Sun.

 

 

10 years 1 month ago

From source to sink: Meteorites from Mars have been known since the 1970’s, but researchers in Oslo, In Lyon, and at IAS have for the first time been able to identify the source crater for shergottites, the largest group of martian meteorites. The source region on Mars was probably impacted about 3 million years ago by a medium-size body, and the meteorites ended their space journey at the Earth’s surface a few thousand years ago.

 

10 years 2 months ago
After a 31 months hibernation phase, the ROSETTA spacecraft has woken up as scheduled on January 20th. After this critical milestone, the spacecraft will progressively get closer to the comet, then it will get into orbit (end of June) so as to map it and to select a landing site for the Philae lander, which will reach the surface of the nucleus in November. IAS has contributed to 3 experiments on board the orbiter and the lander.

 

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