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Explorations An Introduction to Astronomy, 3/e
Thomas T. Arny

Cosmology


Cosmology513
17.1Observations of the Universe514
Distribution of Galaxies514
Motion of Galaxies515
Age of the Universe516
Extending Our Reach: Estimating the Age of the Universe516
Re-Modeling: Age Discrepancy517
The Cosmic Horizon518
The Size of the Universe518
Are We at the Center of the Universe?519
Olbers' Paradox519
The Cosmic Microwave Background521
Composition of the Oldest Stars522
Conclusions Deduced from the Basic Observations of the Universe523
17.2Evolution of the Universe: Open or Closed?524
The Density of the Universe525
A Cosmological Repulsion?526
17.3The Shape of the Universe527
17.4The Origin of the Universe528
Radiation, Matter, and Antimatter in the Early Universe529
History of Matter and Radiation in the Early Universe530
The Formation of Galaxies531
17.5The Inflationary Universe532
Extending Our Imagination: Grand Unified Theories533