Astronomy
Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 28, Problem 1E

How are distant (young) galaxies different from the galaxies that we see in the universe today?

Expert Solution & Answer
Check Mark
To determine

To explain:

The difference between distant young galaxies and the galaxies that are seen in the universe today.

Explanation of Solution

Introduction:

Distant young galaxies are different from present day galaxies in terms of star formation, composition and shape. Distant galaxies were present at the time when the universe was only 500 million years old while present day galaxy is about 13.8 years old.

Distant galaxies were small as compared to present day galaxy and rate of star formation was very high in young galaxies and they were numerous, less luminous and rich in gas.

Distant galaxies were small and elliptical as at that time, spiral arms, bulges and disks were not there.They contain mostly old stars and they were irregular and smaller than present day galaxies. Present day galaxies are spiral in shape and they contain young stars with interstellar matter.

Formation of larger galaxies is the result of combination of fragment of old galaxies. The color of galaxy indicates the age of star by which it is populated.Blue galaxies contain hot stars and star formation occurs at high rate.

Conclusion:

Thus,Distant galaxies were small as compared to present day galaxy and rate of star formation was very high in young galaxies and they were numerous, less luminous and gas rich.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
If most galaxies are moving away from us, are we at the center of the universe? Why or why not?
Astronomers recently claimed to have discovered the most distant galaxy known. How would they have determine this distance?
The Andromeda Galaxy is a member of the Local Group of galaxies. It is approaching us. Does this mean that the Hubble Law is wrong? Why or why not? Explain.

Chapter 28 Solutions

Astronomy

Knowledge Booster
Background pattern image
Physics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
Text book image
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
Text book image
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Text book image
Stars and Galaxies
Physics
ISBN:9781305120785
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Text book image
The Solar System
Physics
ISBN:9781337672252
Author:The Solar System
Publisher:Cengage
General Relativity: The Curvature of Spacetime; Author: Professor Dave Explains;https://www.youtube.com/watch?v=R7V3koyL7Mc;License: Standard YouTube License, CC-BY