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 and then the matter era. String Theory : suggests … 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 Definition: Celestial objects with intense gravitational fields. Composition: Very compact, high mass-to-size ratio. Role: Impact on galaxy growth. Event horizon: The limit beyond which nothing can escape. Time travel: The gravity of a black hole allows for time dilations. Environment: Influence on galactic structures and their dynamics. Scientific research: Studies conducted to understand … Read more
IN BRIEF Birth of stars : Formation from the gravitational contraction of a nebula. Protostars : Clouds of gas that continue to contract to develop a star. Composition : Balls of gas mainly made of hydrogen and helium. Process : Gravitational collapse of interstellar clouds. Stellar evolution : Life cycle including the birth, evolution, and … Read more