Astronomy & Space Science · AST-535
Galaxy Formation & Evolution: Advanced Connections
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Overview
Advanced view of Galaxy Formation & Evolution
Galaxies formed as small density fluctuations in the early universe grew through gravity, collected gas inside dark-matter halos, formed stars, and merged into larger structures. Their evolution continues through gas accretion, star formation, stellar feedback, black-hole activity, and interactions with other galaxies.
Galaxy-evolution models connect the early universe to present-day morphology, stellar populations, chemical enrichment, and black-hole growth.
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References & evidence
Source library for this chapter
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- 01The Evolution and Distribution of Galaxies — SummaryOpen source ↗
OpenStax Astronomy 2e
View claim-by-claim traceability3 verified claims
Deep observations show that distant young galaxies are generally smaller, more irregular, and more actively star-forming than present-day massive systems.
supported · checked Sep 22, 2026Dark-matter overdensities collapse first and provide gravitational wells.
supported · checked Sep 22, 2026Galaxies formed as small density fluctuations in the early universe grew through gravity, collected gas inside dark-matter halos, formed stars, and merged into larger structures.
supported · checked Sep 22, 2026