Galaxies and Galaxy Clusters

Islands of Stars in the Cosmic Expanse

A galaxy is a vast ensemble of billions of stars, gas, dust, and dark matter. The mass of a typical galaxy far exceeds a hundred million solar masses. These colossal structures are the fundamental building blocks of the observable Universe and come in various forms, from elegant spirals to massive ellipticals, including irregular galaxies.

Interactions That Shape Their Evolution

Galaxies do not evolve in isolation: they interact with their neighbors. These gravitational interactions can distort their spiral arms, trigger bursts of star formation, or even lead to spectacular mergers. These processes play an essential role in the evolution of galaxies and in the diversity of their morphologies.

Galaxy Clusters: Giant Structures of the Universe

Galaxies often group together in clusters containing hundreds or even thousands of members bound by gravity. These clusters are some of the largest coherent structures in the Universe. Their study helps us better understand the distribution of matter, both visible and invisible, as well as the large-scale dynamics of the cosmos.

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