From research to industry
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation.
Discover the main research areas on which the CEA works.
Find the latest scientific and institutional news of the CEA.
The CEA publishes various scientific and technical periodicals and videos. Through them, you can discover the CEA’s major research topics and the latest technological innovations produced by its laboratories.
The CEA Research News is a newsletter bringing to your knowledge the most impacting scientific and societal advances and impacts enabled by major European research projects carried by CEA and which are covering the main priorities of the European Union.
Publication and books | Clefs CEA | Fundamental Research | New technologies | Astrophysics
THE UNIVERSE HAS MORE IMAGINATION THAN MANKIND DOESBy Catherine Cesarsky, astrophysicist and member of the French Académie des sciences
ASTROPHYSICS, A CHALLENGING TECHNOLOGICAL QUEST
Stars power the main engine in the evolution of our astronomical environment, feeding the cycle of matter and energy in the galaxies. We are also closely tied to them because they are the source of the main chemical elements of which we are made. Their birth, or rather their formation, is complex and takes place in the densest clouds of gas and dust in the galaxies. By probing these dense clouds, new links between the mechanisms which regulate the star formation and those which structure the interstellar medium on large scales have been discovered, as well as the quasi systematic presence of matter in disks around protostars. The exoplanets, which we now catalogue by the thousands form in such disks.
From the scales of galaxies, to galaxy clusters, to the very Large structures of the Universe, cosmology aims to produce a scenario able to go back to the origins of the forms in the Universe and to use the Universe as a laboratory in which to test the fundamental laws of physics and the existence of components as yet undetectable in the laboratory, such as dark matter and energy.
High-energy astrophysics is the study of the most violent phenomena in our Universe: explosions of massive stars and the formation of compact stars (pulsars, magnetars, black holes), shocks and acceleration of cosmic rays, accretion and relativistic ejections by compact stars. These objects are laboratories for the physics of the extreme: the compactness, magnetic and gravitational fields, shocks, acceleration and speed involved are the most intense permitted by contemporary physics. These phenomena are being studied at CEA using theoretical, numerical and experimental approaches.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.