universe

The role of black holes in the universe

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Le rôle des trous noirs dans l'univers

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

Understanding star formation

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Comprendre la formation des étoiles

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