France has officially joined the international Square Kilometre Array Observatory (SKAO) project, considered one of the most ambitious scientific programs of the 21st century. The announcement was made by the Minister of Higher Education and Research, fulfilling a commitment made several years earlier. With this membership, France becomes the fourteenth member state of this giant infrastructure designed to explore the Universe through radio wave observation.
SKAO relies on the construction of two antenna arrays of unprecedented scale. The first, located in South Africa, will consist of nearly 200 giant parabolic antennas. The second, situated in Western Australia, will comprise more than 130,000 next-generation antennas spread over several tens of kilometers. Together, these facilities will form the most powerful radio telescope ever built and will allow the observation of phenomena invisible to traditional telescopes.
A major technological leap for global astronomy
Scientists expect significant advances from this infrastructure. SKAO's capabilities should allow for the detection of celestial objects much fainter than those currently observable and the production of images of unprecedented precision. Researchers hope this will lead to a better understanding of galaxy formation, the behavior of supermassive black holes, the origin of cosmic magnetic fields, and the evolution of the Universe in its first few hundred million years.
The project will also rely on some of the world's most powerful computing technologies. The data collected daily will represent enormous volumes, requiring supercomputers capable of processing information on a scale never before seen in the field of astronomy. For specialists, this new generation of observatories could produce as many discoveries as those made with the advent of the first large space telescopes.
A strategic role for French research
France's entry into the consortium strengthens the position of national research within major international scientific programs. Several French institutions are already participating in the development of the project, notably the CNRS, the CEA, Inria, the Paris Observatory, the Côte d'Azur Observatory, as well as several universities and research centers specializing in astrophysics and high-performance computing.
The first scientific operations of the SKAO are expected to begin in the coming months, before gradually ramping up until the end of the decade. By 2030, researchers hope to have a tool capable of permanently transforming our understanding of the cosmos and providing answers to some of the biggest remaining questions about the origin and evolution of the Universe.
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