The Cosmic Perspective: Stars and Galaxies (8th Edition) (Bennett Science & Math Titles)
The Cosmic Perspective: Stars and Galaxies (8th Edition) (Bennett Science & Math Titles)
8th Edition
ISBN: 9780134073828
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Question
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Chapter 23, Problem 1VSC
To determine

To explain:

The expansion of the universe accelerating, casting or decelerating at point A.

Expert Solution & Answer
Check Mark

Answer to Problem 1VSC

Solution:

At the point A, the expansion of the universe is accelerating.

Explanation of Solution

Introduction:

The expansion of the universe happens with the change in the time. The distance between two points increases. This is due to the expansion of space-time. The scale of space-time fabric itself changes. This expansion is given by four models namely, re-collapsing universe, critical universe, coasting universe, and accelerating universe as shown in the figure.

The Cosmic Perspective: Stars and Galaxies (8th Edition) (Bennett Science & Math Titles), Chapter 23, Problem 1VSC

Point A is a time in future. At point A, the expansion of the universe is accelerating. The two distant points in the universe would be moving farther apart. The scale of the space-time fabric was expanding. The galaxies would be moving apart more rapidly. The gravitational force would not be strong enough to decelerate or stop expansion.

Conclusion:

Point A represents the accelerated expansion of universe in future.

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Chapter 23 Solutions

The Cosmic Perspective: Stars and Galaxies (8th Edition) (Bennett Science & Math Titles)

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