evolution of galaxies

The origin and evolution of galaxies

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L'origine et l'évolution des galaxies

IN BRIEF Origin of galaxies: results from small fluctuations in density in the primitive universe. Formation: process by merging dwarf galaxies and gravitational collapse. Types of galaxies: include spiral galaxies, with a disk of gas, dust, and stars. Evolution: linked to each galaxy’s ability to create stars. Environment: evolution depends on local physical and chemical … Read more

The influence of quasars on the evolution of galaxies

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L'influence des quasars sur l’évolution des galaxies

IN BRIEF Quasars: Immense black holes at the heart of galaxies. Energy emission: They produce significant amounts of energy by devouring matter. Cosmic evolution: Help in understanding the evolution of the Universe. Interaction with galaxies: Influence the formation and evolution of galaxies. Quasar winds: Produce jets of radiation altering the galactic environment. Energy role: Among … Read more