Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxy would see the same relative motion of all but the closest galaxies away from her.

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Answer 1

Textbook Question

Chapter 34, Problem 1CQ

Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxy would see the same relative motion of all but the closest galaxies away from her.

Expert Solution & Answer

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

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Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxywould see the same relative motion of all but the closest galaxies away from her

If a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H0 (in km/s/Mpc)? km/s/Mpc What is the Hubble time (in yr)? years How old (in yr) would the universe be, assuming space-time is flat and the expansion of the universe has not been accelerating? How would acceleration change your answer? A.If the expansion of the Universe has been accelerating, the Universe could be substantially younger than the value entered above. BIf the expansion of the Universe has been accelerating, the Universe could be substantially older than the value entered above.

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Answer 2

Textbook Question

Chapter 34, Problem 1CQ

Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxy would see the same relative motion of all but the closest galaxies away from her.

Expert Solution & Answer

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 34, Problem 1CQ

Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxy would see the same relative motion of all but the closest galaxies away from her.

Expert Solution & Answer

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 34, Problem 1CQ

Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxy would see the same relative motion of all but the closest galaxies away from her.

Expert Solution & Answer

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

Answer 8

Expert Solution & Answer

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

To determine

The appearance of our galaxy at the center of the expansion of the universe and an observer would see the same relative motion from another galaxy.

Answer 12

Explanation of Solution

Introduction:

Universe is expanding from everywhere and it has no center of expansion. Materials expand from a center in a conventional explosion while Big Bang was an ordinary explosion as there was no time and space before it. Since, the entire universe is expanding not from a center point.

According to Hubble's law, the expansion of the universe is uniformly at all places and the galaxies which were farther away, those were faster receding that's why it appears that we are at the center of the expansion.

Consider an example of a balloon analogy to explain the expansion of the universe. Consider some dots on the surface of the balloon. When air is blown inside it, the balloon expands in all direction and the distance between the dots increases from the point under consideration as a center. Similarly, the universe is expanding uniformly as there is no center of expansion.

From the above, it is clear that an observer can see themselves as stationary at any point on the universe and the other objects appears moving away in space uniformly in all the directions that's why an observer would see the same relative motion from another galaxy.

Conclusion:

Therefore, the universe is expanding uniformly in all the directions as there is no center of expansion that's why an observer would see the same relative motion from another galaxy.

Answer 13

Ch. 34 - Explain why it only appears that we are at the...Ch. 34 - If there is no observable edge to the universe,...Ch. 34 - If the universe is infinite, does it have a...Ch. 34 - Another known cause of red shift in light is the...Ch. 34 - If some unknown cause of red shiftsuch as light...Ch. 34 - Olbers’s paradox poses an interesting question: If...Ch. 34 - If the cosmic microwave background radiation...Ch. 34 - The decay of one type of Kmeson is cited as...Ch. 34 - Distances to local galaxies are determined by...Ch. 34 - Distances to very remote galaxies are estimated...

Explain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxy would see the same relative motion of all but the closest galaxies away from her.

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