Baryonic acoustic oscillations (BAO) represent a fundamental phenomenon in cosmology, marking a crucial sequence in the history of the Universe. These primordial sound waves, which occurred in the hot plasma composed of baryons and photons, have left indelible traces visible in the large-scale structure of the Universe. By studying these oscillations, astrophysicists gain access to … Read more
Observations of the cosmos reveal mysteries that are intricately woven into the delicate fabric of the primordial universe. Among these invisible footprints, the Sachs-Wolfe effect holds a prominent place. It traces the memory of gravitational evolution through the anisotropies of the cosmic microwave background, this ancient breath imbuing every photon of the cosmic background radiation. … Read more
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
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
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
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
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
IN BRIEF Primordial nucleosynthesis: the initial formation of elements after the Big Bang. Origin of matter: explained by the Big Bang model. Carbon chemistry: the foundation of life on Earth with sugar, proteins, lipids. First molecule: the helium hydride ion (HeH+) could be the very first formed element. Complexification of atoms: evolution of hydrogen atoms … Read more
IN BRIEF Multi-scale analysis of organic residues synthesized in the laboratory. Creation of samples from lunar rocks provided by China. Research on the extraterrestrial composition of Bronze Age objects. Examination of primitive extraterrestrial matter to understand its evolution. Detection of chemical traces of extraterrestrial life forms. Use of atomic force microscopy to visualize extraterrestrial molecules. … Read more
IN BRIEF Space research and its scientific implications Applications of Earth sciences in the economy Advances in astronomy and astrophysics Studies of exoplanets and their potential for life Improvement of geochemical measurements with extraterrestrial matter Role of navigation systems in space missions Impact of new technologies on scientific research The sciences of the universe play … Read more