EN BREF Objectifs principaux : Exploration de la Lune, Jupiter, Mars et au-delà. Voyager 1 : La sonde spatiale la plus éloignée ayant transmis des données sur l’espace interstellaire. Hubble : Premier télescope à étudier l’atmosphère des exoplanètes. Galileo : Mission marquante autour de Jupiter, fournissant des images et données atmosphériques. Crucial découvertes : Identification … Read more
EN BREF Trou noir : une région de l’espace avec un champ gravitationnel intense. Disque d’accrétion : matière en orbite autour d’un corps céleste, souvent composée de gaz et de poussières. Disques d’accrétion autour des trous noirs supermassifs : clés pour observer l’accrétion de matière. Inclinaison du disque d’accrétion et angle d’observation influencent la luminosité … 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
IN BRIEF Modern astronomy: study of celestial objects and their properties. Galileo: pioneer who laid the foundations of modern science. Universal gravitation: discovery integrating different physical approaches. Atomic physics: fundamental for understanding the Universe. Astronomical observations: keys to exploring other planets and life. Links between physics and astronomy: unification of disciplines to explain the origin … Read more
IN BRIEF Trigonometry: an essential tool for navigation and astronomy. Used to calculate distances between celestial bodies. Foundation of triangulation techniques in maritime and aerial navigation. Helps to predict movements of planets and satellites. Role in the design of astronomical instruments. Importance for studying trajectories in space. Useful for mapping and modern navigation. Practical applications … Read more
IN BRIEF Orbital mechanics: study of the movements of objects in space. Satellite orbits: relationship between altitude and duration of presence in orbit. Kepler’s laws: foundations of observed planetary movements. Artificial satellite: man-made object orbiting around a celestial body. Trajectories: key concept in space mechanics for calculating orbits. Types of satellites: varieties ranging from weather … Read more
IN BRIEF Big Bang : a cosmic event marking the origin of the Universe according to the current cosmological model. Origins of the Universe : study of the conditions that preceded and followed the Big Bang. Formation Eras : the Universe evolved through the radiation era, then the matter era. String Theory : suggests that … 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 … Read more
IN BRIEF K2-18b: possible refuge for extraterrestrial life. Habitable exoplanets: fewer than expected. Multiplication of discoveries of planetary systems. Importance of advanced telescopes in research. Search for signs of life in the atmospheres of exoplanets. International collaboration to explore habitable planets. New strategies to detect extraterrestrial life. Reflection on the intellectual challenges of this research. … Read more
IN BRIEF The rover Curiosity discovered the presence of sulfates on Mars, indicating an environment conducive to life. Pure sulfur was identified for the first time, enriching our knowledge of the red planet. A study revealed fossilized witnesses of a cyclical climate, similar to that of Earth. Scientists discovered an impressive volcano with a height … Read more