The Essential Cosmic Perspective (7th Edition) - Standalone book
7th Edition
ISBN: 9780321928085
Author: Jeffrey O Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 1, Problem 19EAP
Decide whether the statement makes sense (or is clearly true) or does not make sense (or is clearly false). Explain clearly, not all of these have definitive answers, so your explanation is more important than your chosen answer.
20. The observable universe ¡s the same size today as it was a few billion years ago.
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Answer each of the following questions to the best of your ability in your own words. Be as specific and detailed as possible.
1. Describe each of the following terms:
galaxy
solar system
universe
Describe any relationships that may exist among any of these three things
2. Briefly explain the Big Bang theory
Question A7
State three pieces of evidence that support the idea that the Universe began in a hot Big Bang,
and explain how each piece of evidence supports the hot Big Bang model. Describe the ob-
servational evidence that supports the idea that the Universe is pervaded by Dark Energy, and
explain why each piece of evidence you cite supports the Dark Energy model.
Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy 2. In this case,
A.
Galaxy 1 must be twice as big as Galaxy 2.
B.
we are seeing Galaxy 1 as it looked at an earlier time in the history of the universe than Galaxy 2.
C.
we are seeing Galaxy 1 as it looked at a later time in the history of the universe than Galaxy 2.
D.
Galaxy 2 must be twice as old as Galaxy 1.
Chapter 1 Solutions
The Essential Cosmic Perspective (7th Edition) - Standalone book
Ch. 1 - Prob. 1VSCCh. 1 - Prob. 2VSCCh. 1 - About how far away from Earth would the Sun be...Ch. 1 - Prob. 4VSCCh. 1 - Prob. 1EAPCh. 1 - Define astronomical unit and light-year.Ch. 1 - Explain the statement The farther away we look in...Ch. 1 - Prob. 4EAPCh. 1 - Prob. 5EAPCh. 1 - What do we mean when we say that the universe is...
Ch. 1 - In what sense are we “star stuff”?Ch. 1 - Use the cosmic calendar to describe how the human...Ch. 1 - Briefly explain Earth’s daily rotation and annual...Ch. 1 - Prob. 10EAPCh. 1 - Prob. 11EAPCh. 1 - Prob. 12EAPCh. 1 - Prob. 13EAPCh. 1 - Prob. 14EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 16EAPCh. 1 - Prob. 17EAPCh. 1 - Prob. 18EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 20EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 22EAPCh. 1 - Prob. 23EAPCh. 1 - An astronomical unit is (a) any planet’s average...Ch. 1 - The star Betelgeuse s about 600 light-years away....Ch. 1 - Prob. 26EAPCh. 1 - Prob. 27EAPCh. 1 - Prob. 28EAPCh. 1 - Prob. 29EAPCh. 1 - Prob. 30EAPCh. 1 - Prob. 31EAPCh. 1 - Prob. 32EAPCh. 1 - Prob. 33EAPCh. 1 - Thinking About Scale. One key to success m science...Ch. 1 - Prob. 35EAPCh. 1 - Prob. 36EAPCh. 1 - Prob. 37EAPCh. 1 - Prob. 38EAPCh. 1 - Prob. 39EAPCh. 1 - Prob. 40EAPCh. 1 - Prob. 41EAPCh. 1 - Moonlight and Sunlight. How long does it take...Ch. 1 - Prob. 43EAPCh. 1 - Driving Trips. Imagine that you could drive your...Ch. 1 - Prob. 45EAPCh. 1 - 48. Vast Orbs. Dutch astronomer Christiaan Huygens...Ch. 1 - Prob. 47EAPCh. 1 - Prob. 48EAPCh. 1 - Prob. 49EAPCh. 1 - Prob. 50EAPCh. 1 - Prob. 51EAP
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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
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- M6arrow_forward9. I found this meme online. Its goal is to undermine the picture of the Universe proposed by modern astronomy as it was discussed in class. How would you answer this question if you want to convince someone of the validity of the view proposed by modern astronomy? THE NORTH STAR POLARIS IS STATIONARY AND NEVER MOVES fb.com/fematters HOW IS THIS POSSIBLE ON A SPINNING BALL HURLING THROUGH SPACE?arrow_forwardWhich of the following can be concluded from the two premises below: 1. Whatever begins to exist has a cause 2. The universe began to exist some 14 billion years ago a. the universe must have a cause b. nothing c. the universe caused itself d. there must be a multiversearrow_forward
- I’ve gotten 3 different answers each time I’ve worked #4 out. I have no idea what to do.arrow_forwardThe mass density of our universe is measured to be about 10-29 kg/m3. If an arbitrary point is chosen as the center, how large is the radius of a spherical surface centered at the point so that the mass enclosed in the surface will become a blackhole observed by someone outside the surface? A. 4.2 trillion light years B. 420 billion light years C. 42 billion light years D. 4.2 billion light years Is the answer D? Thanks!arrow_forwardWhich statement below does not fit the model of the big bang and the subsequent changes in the universe? A) the universe was denser previously than it is now. B) the universe was hotter previously than it is now . C) the galaxies are moving closer together as time progresses. D) the universe is continuing to expand, even after the big bang.arrow_forward
- Science homework. Having troublearrow_forward1. If a galaxy is 9.1 Mpc away from Earth and recedes at 511 km/s, what is H0 (in km/s/Mpc)? 2. What is the Hubble time (in yr)? 3. How old (in yr) would the universe be, assuming space-time is flat and the expansion of the universe has not been accelerating?arrow_forwardDescribe what is meant by Olbers’ paradox. Explain how it is solved by our modern understanding of the Universe.arrow_forward
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