Ch15

Cosmology Chapter 15 Great Idea: The universe began billions of years ago in the big bang and it has been expanding ever since.

Chapter Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Nebula Debate ,[object Object],[object Object],[object Object],[object Object]

Edwin Hubble and the Discovery of Galaxies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Kinds of Galaxies ,[object Object],[object Object],[object Object],[object Object],[object Object]

The Redshift and Hubble’s Law

The Redshift and Hubble’s Law ,[object Object],[object Object],[object Object],[object Object]

Photographs of Galaxies and Their Spectra

Illustration of Hubble Expansion

Science by the Numbers ,[object Object]

Distance versus Velocity Relationship

The Big Bang ,[object Object],[object Object]

The Large-Scale Structure of the Universe ,[object Object],[object Object],[object Object],[object Object]

Distribution of Galaxies in Space

Apache Point Observatory – New Mexico, U.S.

Useful Analogies ,[object Object],Expanding Balloon Analogy

Evidence for the Big Bang ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Some General Characteristics of an Expanding Universe ,[object Object],[object Object],[object Object],[object Object]

The Sequence of “Freezings”

10 –43 Second: The Freezing of All Forces ,[object Object],[object Object],[object Object],[object Object]

10 –35 Second: The Freezing of the Electroweak and Strong Forces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Evolution of the Universe through the Succession of Freezings

10 –10 Second: The Freezing of the Weak and Electromagnetic Forces ,[object Object],[object Object],[object Object],[object Object]

10 –5 Second: The Freezing of Elementary Particles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Three Minutes: The Freezing of Nuclei ,[object Object],[object Object],[object Object]

Before One Million Years: The Freezing of Atoms ,[object Object],[object Object],[object Object],[object Object]

Dark Matter and Ripples at the Beginning of Time ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The End of the Universe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Future ,[object Object],[object Object]

Ch15

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Ch15