Astrochemistry and Origins
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2 years 2 weeks ago
The Japanese Hayabusa2 mission (JAXA) has brought back samples from the carbonaceous primitive asteroid Ryugu. Thanks to the analyses of these samples by an international group led by Prof. Tomoki Nakamura (Tohoku Univ., Japan), it is possible to propose a scenario retracing the history of Ryugu, including its formation after the fragmentation of its parent asteroid.
2 years 8 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.
3 years 2 months 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.
3 years 4 months 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 years 11 months ago
On October 21st, 2020, the OSIRIS-REx spacecraft succeeded in touching asteroid Bennu to collect samples from the surface. Launched in September 2016 and in orbit since December 2018, it was doing a detailed survey of the surface to map and select the best sample collection site. OSIRIS-REx will deliver the samples to Earth in September 2023.