162 Expansion of the Universe 7) If you were in the D galaxy, would the A, B, C,

Question

162 Expansion of the Universe 7) If you were in the D galaxy, would the A, B, C, and E galaxies all appear to move the same distance in the time interval from the Early Universe to the Universe Some Time Later? 8) Imagine that you are still in Galaxy D. Rank the A, B, C, and E galaxies in terms of their relative speeds away from you, from fastest to slowest. 9) Now imagine that you are in the E galaxy. Rank the A, B, C, and D galaxies in terms of their relative speeds away from you, from greatest to smallest. 10) Is there a relationship between an object's distance away from you in the universe and the speed it would appear to be moving away from you? If so, describe this relationship. 11) Would your answer to Question 10 be true in general for all locations in the universe? 12) Consider the following discussion between two students regarding the possible location. of the center of the universe. Student 1: Since all the galaxies we observe are moving away from us, we must be at the center of the universe. Student 2: If you look at the drawing on the first page, it's pretty clear that all the gal- axies move away from each other, so I think each galaxy must be at the center of the universe. Do you agree or disagree with either or both of the students? Explain your reasoning. © 2013 Pearson Education, Inc. LECTURE-TUTORIALS FOR INTRODUCTORY ASTRONOMY T E

Explanation / Answer

I agree with student 2

We know that bingbang is an expansion of the space itself. That means that every point in the universe appears to be at the center of the universe. We are moving apart means the space present between the clusters of the galxies expansds like the rest of the total universe. So student 2 discussion is correct.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.