Astrochemistry and Origins

Interstellar Matter and Cosmology

Stellar and Solar Physics

Solar and Planetary Systems

Latest News

2 years 2 months ago

The PLATO project at IAS has reached a new stage in the development of the flight camera calibration structure. Indeed, after an intense phase of studies, development, and tuning of the integration and validation activities, the validation tests of the cryogenic and vacuum elements around and inside the Saturn tank are starting this week. All the infrastructures and the control/command for this cryogenic test have been realized under the responsibility of the calibration station team.

2 years 3 months ago

Nano-diamonds remain an enigmatic component of cosmic dust. A significant fraction of the pre-solar nano-diamonds extracted from primitive meteorites were associated with distant exploding stars (supernovae). While they have been found in many Solar System bodies, they have been detected in only two proto-planetery disks and one evolved star, and they have never been observed in the interstellar medium. Newly-derived nano-diamond optical constants generated with the THEMIS dust model developed at IAS explain why it is hard to observe nano-diamonds in space.

2 years 3 months ago

The PARADISE Scientific Interest Group (Platforms for Applied Research and Development Activities in Ground and on board Instrumentation) will join the very closed club of National Research Infrastructures in spring 2022 during the roadmap update process initiated in early 2021. IAS is a founding member of the GIS and has been leading it since its creation in 2017.

2 years 3 months ago

Water-rock interactions are essential in the formation of planets, especially that of the Earth. In fact, the origin of water in solar system objects has always been extensively studied. The isotopic composition of the hydrogen and oxygen atoms that compose the water molecule is in particular a key tracer of its sources. The hydrogen isotopic composition of the water of telluric planetary objects is intermediate between that of interstellar water very rich in deuterium and that of hydrogen gas depleted in deuterium by nuclear reactions in stars.


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