Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 22, Problem 9CC
To determine
The difference in the motion of stars at the edge of our galaxy if dark matter did not exist.
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Chapter 22 Solutions
Universe
Ch. 22 - Prob. 1CCCh. 22 - Prob. 2CCCh. 22 - Prob. 3CCCh. 22 - Prob. 4CCCh. 22 - Prob. 5CCCh. 22 - Prob. 6CCCh. 22 - Prob. 7CCCh. 22 - Prob. 8CCCh. 22 - Prob. 9CCCh. 22 - Prob. 10CC
Ch. 22 - Prob. 11CCCh. 22 - Prob. 12CCCh. 22 - Prob. 13CCCh. 22 - Prob. 14CCCh. 22 - Prob. 1CLCCh. 22 - Prob. 2CLCCh. 22 - Prob. 1QCh. 22 - Prob. 2QCh. 22 - Prob. 3QCh. 22 - Prob. 4QCh. 22 - Prob. 5QCh. 22 - Prob. 6QCh. 22 - Prob. 7QCh. 22 - Prob. 8QCh. 22 - Prob. 9QCh. 22 - Prob. 10QCh. 22 - Prob. 11QCh. 22 - Prob. 12QCh. 22 - Prob. 13QCh. 22 - Prob. 14QCh. 22 - Prob. 15QCh. 22 - Prob. 16QCh. 22 - Prob. 17QCh. 22 - Prob. 18QCh. 22 - Prob. 19QCh. 22 - Prob. 20QCh. 22 - Prob. 21QCh. 22 - Prob. 22QCh. 22 - Prob. 23QCh. 22 - Prob. 24QCh. 22 - Prob. 25QCh. 22 - Prob. 26QCh. 22 - Prob. 27QCh. 22 - Prob. 28QCh. 22 - Prob. 29QCh. 22 - Prob. 30QCh. 22 - Prob. 31QCh. 22 - Prob. 32QCh. 22 - Prob. 33QCh. 22 - Prob. 34QCh. 22 - Prob. 35QCh. 22 - Prob. 36QCh. 22 - Prob. 37QCh. 22 - Prob. 38QCh. 22 - Prob. 39QCh. 22 - Prob. 40QCh. 22 - Prob. 41QCh. 22 - Prob. 42QCh. 22 - Prob. 43QCh. 22 - Prob. 44QCh. 22 - Prob. 45QCh. 22 - Prob. 46QCh. 22 - Prob. 47QCh. 22 - Prob. 48QCh. 22 - Prob. 49QCh. 22 - Prob. 50Q
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- Why did it take so long for the existence of other galaxies to be established?arrow_forwardHow are distant (young) galaxies different from the galaxies that we see in the universe today?arrow_forwardIf all distant galaxies are expanding away from us, does this mean we’re at the center of the universe?arrow_forward
- What is the difference between hot dark matter and cold dark matter? How does this difference affect cosmology?arrow_forwardSuppose the stars in an elliptical galaxy all formed within a few million years shortly after the universe began. Suppose these stars have a range of masses, just as the stars in our own galaxy do. How would the color of the elliptical change over the next several billion years? How would its luminosity change? Why?arrow_forwardWhat is the fate of a closed universe? In what case would that not be true?arrow_forward
- What percentage of matter is ordinary matter? What percentage is dark matter? What makes up the rest of the Universes density?arrow_forwardWhy didnt astronomers before Shapley realize how large our Galaxy is?arrow_forwardWhat is the most useful probe of the early evolution of the universe: a giant elliptical galaxy or an irregular galaxy such as the Large Magellanic Cloud? Why?arrow_forward
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