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The Shapes of Galaxies: Why Do Galaxies Have Different Shapes, Spiral and Elliptical Galaxies Explained Simply
Paperback
Series: Astronomy Explained for Adult, Book 5
Publisher: Independently Published
Published: Aug 7 2026
Pages: 80
Weight: 0.26
Height: 0.17 Width: 6.00 Depth: 9.00
Language: English
Twelve chapters cover every major galaxy type in depth: spirals and the physics of the Tully-Fisher relation, barred spirals and how the bar channels gas to the center to fuel star formation, ellipticals and the violent relaxation that produces their smooth profiles, lenticulars as cosmic archaeologists of the quenching process, dwarf galaxies as the most dark-matter-dominated objects known, mergers and the tidal features that persist for billions of years as fossil records, and the full history of how galaxy morphologies have changed across 13 billion years of cosmic time. The final chapter covers what the James Webb Space Telescope has found in the first billion years of cosmic history, including disk galaxies that formed earlier than any model predicted and elongated structures with no counterpart in the nearby universe.
Part of the Stars and Galaxies Adult Series.
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