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
IN BRIEF Spiral galaxies: clusters of hundreds of billions of stars Structure in the shape of a disk and central bulge Formed by the collapse of hydrogen and helium clouds Spiraled arms influenced by giant molecular clouds Notable examples like the Milky Way and the Andromeda Galaxy Variety of shapes: spiral, elliptical, barred, and irregular … Read more
