Astrochemistry and Origins

Interstellar Matter and Cosmology

Stellar and Solar Physics

Solar and Planetary Systems

Latest News

3 days 23 hours ago

For the first time, scientists have explored the magnetic field in the upper solar atmosphere by observing the polarization of ultraviolet light from the Sun. They accomplished this by analyzing data taken by the CLASP sounding rocket experiment during its 5-minute flight in space on September 3, 2015. Now that ultraviolet spectropolarimetry, the method used in the CLASP project, has been proven to work, it can be used in future investigations of the magnetic fields in the upper chromosphere and the transition region to better understand activity in the solar atmosphere.

1 month 5 days ago

Monday, April 10, at the headquarters of JAXA (the Japanese space agency) in Tokyo, J-Y. Le Gall, President of CNES and N. Okumura, his counterpart at JAXA, signed a scientific and technical cooperation agreement for the MMX exploration mission to Phobos and Deimos, the two moons of Mars. The primary objective of this mission, which is scheduled for launch in 2024, is to characterise the properties and composition of these two objects in order to determine whether they are derived from asteroids in the outer belt (the carriers of volatiles: water and carbon compounds), or objects re-accreted after a giant impact with Mars, as per the origin of the Earth's Moon.

1 month 4 weeks ago

A multidisciplinary team involving researchers from IAS, IPNO, ISMO, and CSNSM in Orsay, and GSI in Darmstadt (Germany) has characterized in the laboratory the effects of heavy cosmic rays on the structural change and sputtering of small carbonaceous species released when cosmic rays, simulated and accelerated at the GSI accelerator, hit a carbonaceous interstellar dust grain analogue. The measurements performed during such simulations allow knowing the processes induced by radiations observed in space and their relative importance. The objective of these studies is to provide data on the evolution of the interstellar material, to understand its further evolution and provide constraints for modelers of astrophysical environments.

3 months 2 weeks ago

Nabila Aghanim, CNRS Directeur de Recherche at the Institut d’Astrophysique Spatiale in Orsay has just received the CNRS Silver Medal, a distinction, which «  honours every year researchers for the originality, the quality, and the significance of their work, recognised both in France and internationally, contributing thus to the influence of the CNRS and to the excellence of French research »
 

3 months 3 weeks ago

The Sun is currently in a quiet phase ; the next activity peak is is expected to happen in about five years, but in any event, a big solar-storm can strike anytime, not just at the peak of the solar cycle. Scientists and representatives of industrial sectors affected by space weather met at the Met Office to discuss how the solar-flare forecasting system FLARECAST should be designed to best serve user needs.

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