Alain Picard 
IN BRIEF Challenges related to astronaut health Impact on space tourism Necessity for new technologies for diagnosis Clinical research in space Issues for missions to the Moon and Mars Biology and effects of manned spaceflights Space resources for the health of tomorrow In a world where space exploration offers unprecedented horizons, the challenges of space … Read more
IN BRIEF Thermodynamics: Study of physical properties as a function of temperature. Thermal equilibrium: State where temperature reaches a stable value. Astrophysics: Application of thermodynamic principles to astronomical phenomena. Wien’s Law: Principles used to analyze radiation in the universe. Mass-luminosity relation: Correlations between mass and light emission from stars. Understanding accretion disks and other astrophysical … Read more
IN BRIEF Neutrinos are nearly massless subatomic particles. They have no electric charge, making their identification complex. They act as messengers of cosmic phenomena. Neutrinos come from energetic events such as supernovae. They allow for a better understanding of astrophysical phenomena. These particles are more abundant than dark matter. Neutrino astronomy offers a complementary perspective … Read more
IN BRIEF Black hole: a region of space with an intense gravitational field. Accretion disk: matter in orbit around a celestial body, often composed of gas and dust. Accretion disks around supermassive black holes: key to observing the accretion of matter. Inclination of the accretion disk and angle of observation influence the detected brightness. Emission … Read more
IN BRIEF Apollo Program by NASA, active from 1961 to 1975 Apollo 11, first human step on the Moon on July 21, 1969 Rock samples collected during lunar missions Use of the Saturn V launcher, developed by Werner Von Braun Importance of the missions for geological and scientific research Political and technological impact of the … Read more
IN BRIEF Mass: between 0.3 and 1.4 times that of the Sun Volume: similar to that of the Earth Density: very high, resulting in intense gravitational forces Mass-size relation: the greater the mass, the smaller the size Electrons: exert a dominant quantum pressure within these celestial bodies Compactness: makes these celestial bodies sensitive to gravitational … Read more
IN BRIEF Supercomputers: essential tools for research in astrophysics. Used for complex simulations of cosmic phenomena. Collaboration of researchers through supercomputers like Frontera and Jean Zay. Computational capacities exceeding quadrillions of operations per second. Ongoing projects to create the largest 3D map of the universe. Impact on the understanding of the evolution of the universe … Read more
IN BRIEF Machine learning for cosmological analysis. Correction of detection biases of weak lenses. Use of algorithms for astrophysical parameter estimation. Introduction to ensemble methods. Estimations of biases related to galaxy properties. Applications of AI in the quest for the infinite. Use of optimal transport algorithms in cosmology. Machine learning in astronomy and biomedicine. In … Read more
IN SHORT Space exploration and ethics: a necessary balance Legal blockage: non-appropriation of celestial bodies (1967 Treaty) Considerations on extraterrestrial environments and their preservation Fair distribution of space resources Reflections on human errors to avoid in space Geoengineering and atmospheric modifications: ethical issues Colonization: questions to ask before settling elsewhere Vision of the “space barons”: … Read more
IN SHORT Quantum physics and cosmology emerged in the early 20th century. Quantum cosmology describes the early moments of the Universe. The concept of quantum multiverse suggests an infinity of universes. Quantum gravity raises many questions about the nature of the Universe. Big Bang and particle physics: essential links. Projects on loop quantum cosmology are … Read more