EN BREF Programme Apollo de la NASA, actif de 1961 à 1975 Apollo 11, premier pas de l’Homme sur la Lune le 21 juillet 1969 Échantillons rocheux prélevés lors des missions lunaires Utilisation du lanceur Saturn V, développé par Werner Von Braun Importance des missions pour la recherche géologique et scientifique Impact politique et technologique … Read more
EN BREF Masse : entre 0.3 et 1.4 fois celle du Soleil Volume : semblable à celui de la Terre Densité : très élevée, provoquant des forces gravitationnelles intenses Relation masse-taille : plus la masse augmente, plus la taille diminue Électrons : exercent une pression quantique dominante au sein de ces astres Compacité : rend … Read more
EN BREF Superordinateurs : outils essentiels pour les recherches en astrophysique. Utilisation pour des simulations complexes des phénomènes cosmiques. Collaboration de chercheurs via des supercalculateurs comme Frontera et Jean Zay. Capacités de calcul dépassant les quadrillions d’opérations par seconde. Projets en cours pour créer la plus grande carte 3D de l’univers. Impact sur la compréhension … 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 infinity. Use of optimal transport algorithms in cosmology. Machine learning in astronomy and biomedicine. In the … Read more
IN BRIEF 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 BRIEF Quantum physics and cosmology were born in the early 20th century. Quantum cosmology describes the early moments of the Universe. The concept of the 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 … Read more
IN SHORT Cité de l’espace: a space for exploration to discover the universe. Air and Space Museum: the largest aeronautical museum in France, located 10 minutes from Paris. Educational exhibitions: a playful way to understand the conquest of space. Explore Space: showcasing distant worlds through immersive installations. Guided tours: for an enriching experience of the … Read more
IN BRIEF Gravitational waves: oscillations of the curvature of space-time. Produced by cosmic events such as supernovas and black holes. Validation of general relativity by Albert Einstein in 1916. Possible detection thanks to facilities like LIGO. Significant consequences for modern astrophysics and the study of universes. Access to invisible phenomena that enrich our understanding of … Read more
IN BRIEF Modern astronomy: exploring current instruments. Measurement instruments essential for observing celestial bodies. Telescopes: primary tools for capturing celestial light. Binoscopes: used for detailed observations. Spectroscopy: analysis of visible and invisible light. Astrolabe: historical instrument for measuring the sky. Advanced technologies: tools like Absolute Arm and Leica Tracker. Optics: understanding the properties of light. … Read more
IN BRIEF Observable universe: The visible part of the universe, limited by the cosmic horizon. Size of the universe: Estimated to be at least 96 billion light-years. Cosmic horizon: Boundary beyond which the universe remains opaque. Cosmic microwave background: Light from the Big Bang visible at about 13.8 billion light-years. Expansion of the universe: The … Read more