Quantum gravity and black holes

Black holes embody one of the deepest mysteries of the universe, revealing both the extreme power of gravity and the limits of current physics. These celestial objects, formed from the collapse of massive stars, concentrate an incredible mass into an infinitely small space. As a result, they become natural laboratories where quantum gravity and quantum … Read more

Cosmological magnetic monopoles

Magnetic monopoles are among the most fascinating enigmas of modern physics, captivating both astrophysicists and particle physics theorists. At the heart of contemporary cosmology, these hypothetical particles dissociate classical magnetic duality by postulating the existence of objects carrying a unique magnetic pole, as opposed to the familiar dipoles of conventional physics. Their discovery would transform … Read more

The CP violation in cosmology

The violation of CP symmetry (charge-parity) remains one of the most fascinating and complex phenomena studied in modern cosmology. Since its discovery in the decays of K mesons in the 1960s, this anomaly challenges the fundamental equality between matter and antimatter in the primordial universe. While classical theories assumed a perfect balance between particles and … Read more

The cosmic matter-antimatter asymmetry

The matter-antimatter asymmetry in the Universe remains a fascinating enigma in cosmology and fundamental physics. While the Standard Model predicts a symmetric creation of matter and antimatter during the Big Bang, our observations show a striking predominance of matter in the current Universe. This imbalance raises profound questions about the nature of physical laws, the … Read more

Supersymmetry and cosmic particles

In the rapidly expanding field of high-energy physics, supersymmetry stands out as a revolutionary approach aimed at surpassing the limits of the standard model. This theory proposes that every fundamental particle, whether a fermion or a boson, has a supersymmetric partner whose spin differs by half a unit. Moreover, recent advancements in the detection of … Read more

The additional dimensions and astronomy

Recent advances in fundamental physics shed light on a fascinating concept that goes beyond the simple perception of the three-dimensional universe: the existence of extra dimensions. These dimensions, invisible to the naked eye and conventional instruments, could radically transform our understanding of space-time and thus revolutionize the field of astronomy. At the heart of the … Read more

The physics of hypothetical wormholes

Wormholes remain one of the most fascinating and enigmatic concepts of modern theoretical physics, resonating with both the strings of science and those of science fiction. These hypothetical structures represent shortcuts within the fabric of space-time, proposing the captivating idea that the universe could be traversed almost instantaneously through these cosmic tunnels. Anchored in the … Read more

Primordial gravitational waves

At the frontier of modern cosmology, primordial gravitational waves present themselves as a fundamental enigma for deciphering the history of the universe. These subtle oscillations in the very structure of spacetime are thought to have emerged during the very first moments of the cosmos, shortly after the Big Bang, and carry precious information about the … Read more

The role of cosmic rays in the universe

Le rôle des rayons cosmiques dans l'univers

IN BRIEF Cosmic rays: high-energy subatomic particles coming from space. Messengers of violent events in the universe. Composed mainly of protons and atomic nuclei. Create large showers of secondary particles upon their manifestation. Constantly bombard the Earth and impact our atmosphere. Represent one of the greatest dangers for astronauts in space exploration. Play a crucial … Read more

The philosophical implications of the sciences of the universe

Les implications philosophiques des sciences de l'univers

IN BRIEF Reexamination of fundamental notions: substance, time, causality. Study of the concepts of evolution regarding the universe and societies. Analysis of the foundations and methods of philosophy of science. Questioning the value and consequences of scientific research. Exploration of the philosophical and spiritual implications of modern physics. Cosmology as a physical system raising philosophical … Read more