Galaxies: Formation, Evolution, Phenomena

Galaxies are the fundamental building blocks of the universe, and understanding how they form from primordial gas, grow through mergers, and change over billions of years sits at the core of modern astrophysics. Researchers combine large observational surveys like the Sloan Digital Sky Survey with computational simulations to trace how stars assemble inside galaxies, how supermassive black holes at galactic centers drive luminous quasar phases, and how invisible dark matter scaffolds the large-scale structure we observe today. Among the sharpest open questions are how feedback from black holes and supernovae regulates star formation well enough to produce the quiet, massive galaxies we see in the present universe, and how the earliest galaxies managed to form so quickly after the Big Bang — a puzzle that recent deep-field observations have made considerably more acute.

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Keywords

GalaxiesCosmologyBlack HolesStellar PopulationsStar FormationDark Matter