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Galaxies and Cosmic HistoryModule 2Galaxy Families and Environments
Module 2 / Lesson 7 of 2439 min
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Why Do Galaxies Live in Groups, Clusters, and Larger Structure?

What do position, velocity, and gravity reveal about a galaxy's environment?

Build galaxy environment from projected positions to distance, velocity, hot gas, lensing mass, and the larger cosmic web while keeping scale separate from gravitational binding.

An original scientific concept showing galaxy groups around a dense central cluster with faint larger-scale filaments.
Vastward-generated concept illustration. It introduces environmental hierarchy; the real Hubble observation of Abell 2744 appears below.

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