IN BRIEF Gravitational waves: oscillations of the curvature of space-time. Produced by cosmic events such as supernovae and black holes. Validation of general relativity by Albert Einstein in 1916. Detection possible thanks to installations like LIGO. Important 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/size ratio. Role: Impact on the growth of galaxies. Event horizon: Limit beyond which nothing can escape. Time travel: The gravity of a black hole allows for time dilation. Environment: Influence on galactic structures and their dynamics. Scientific research: Studies conducted to … Read more
IN BRIEF Star formation: 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 composed of hydrogen and helium. Process: Gravitational collapse of interstellar clouds. Stellar evolution: Life cycle encompassing the birth, evolution, and death of stars. Ongoing formation: About … Read more