Since the dawn of modern cosmology, dark matter has intrigued researchers with its fundamental role in the structuring of the universe while remaining practically elusive. This mysterious substance, which accounts for about 85% of the total mass of the invisible universe, profoundly influences the movement of galaxies and the evolution of large cosmic structures. Yet, … Read more
Large-scale correlations
Alain Picard
As scientific disciplines explore large-scale phenomena, understanding large-scale correlations becomes an unavoidable necessity. These links between variables, discerned in massive datasets, open up unprecedented perspectives in both astrophysics and social or environmental sciences. Analyzing these complex interactions requires not only a deep mastery of statistics and mathematical models but also an ability to interpret fluctuations … Read more
Gravitational waves: detecting the oscillations of space-time
Antoine Lefevre
Gravitational waves embody a major breakthrough in the understanding of the universe. These subtle oscillations of the fabric of spacetime, predicted over a century ago by Albert Einstein’s general relativity, resonate through the universe with imperceptible cosmic vibrations. Their detection has opened a new window onto extreme astrophysical phenomena, such as black hole mergers, which … Read more
astronomy, detection of gravitational waves, fundamental physics, gravitational waves, oscillations of spacetime
Cosmic voids and their evolution
In the vastness of the universe, beyond the twinkling of galaxies, lie enormous regions practically devoid of visible matter, the cosmic voids. These areas, true depressions in the large-scale structure of the cosmos, offer a striking contrast to the dense filaments and galactic clusters that compose the cosmic web. Their characteristics, formation, and role in … Read more
Photonic materials: controlling the propagation of light
Photonic materials embody a revolution in the mastery of light, driven by major scientific and technological advancements. Since the discovery and design of the first structures capable of influencing the propagation of light, research in this area has continued to grow. These materials, often made up of sophisticated periodic lattices, allow for precise and unprecedented … Read more
Zero Trust architecture: rethinking security without a perimeter
In a world where networks are no longer confined to a single geographical location and where digital technology extends across a multitude of devices and services, traditional perimeter security shows its limits. The rise of cloud computing, widespread telecommuting, and the increase in external access points necessitate a complete overhaul of data protection methods and … Read more