ESSENTIAL COSMIC PERSPECT. PKG
ESSENTIAL COSMIC PERSPECT. PKG
8th Edition
ISBN: 9780134786421
Author: Bennett
Publisher: PEARSON
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Concept explainers

Question
Chapter 18, Problem 1VSC
To determine

To explain:

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

Expert Solution & Answer
Check Mark

Answer to Problem 1VSC

Solution:

At 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 the 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, the re-collapsing universe, the critical universe, coasting universe, and accelerating universe as shown in the figure.

ESSENTIAL COSMIC PERSPECT. PKG, Chapter 18, Problem 1VSC

Point A is a time in the 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 the expansion.

Conclusion:

Point A represents the accelerated expansion of the universe in the future.

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