The Cosmic Perspective
7th Edition
ISBN: 9780321839558
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: Addison-Wesley
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Chapter 21, Problem 45EAP
To determine
The expected average number of galaxies similar in size to the milky way in cubes of side-length of 10 million light years, if cosmological redshift=3 corresponds to an era when the average distance between galaxies was one quarter of its current value. Given that for the present-day universe, each cube of same size would contain on average, about one galaxy with a size comparable to that of a milky way and with the assumption that number of galaxies of each type has not changed between then and now. The expected change in frequency of collisions.
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Chapter 21 Solutions
The Cosmic Perspective
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