Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Chapter 29, Problem 10E
Astronomers have found that there is more helium in the universe than stars could have made in the 13.8 billion years that the universe has been in existence. How does the Big Bang scenario solve this problem?
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Chapter 29 Solutions
Astronomy
Ch. 29 - What are the basic observations about the universe...Ch. 29 - Describe some possible futures for the universe...Ch. 29 - What does the term Hubble time mean in cosmology,...Ch. 29 - Which formed first: hydrogen nuclei or hydrogen...Ch. 29 - Describe at least two characteristics of the...Ch. 29 - Describe two properties of the universe that are...Ch. 29 - Why do astronomers believe there must be dark...Ch. 29 - What is dark energy and what evidence do...Ch. 29 - Thinking about the ideas of space and time in...Ch. 29 - Astronomers have found that there is more helium...
Ch. 29 - Describe the anthropic principle. What are some...Ch. 29 - Describe the evidence that the expansion of the...Ch. 29 - What is the most useful probe of the early...Ch. 29 - What are the advantages and disadvantages of using...Ch. 29 - Would acceleration of the universe occur if it...Ch. 29 - Suppose the universe expands forever. Describe...Ch. 29 - Some theorists expected that observations would...Ch. 29 - There are a variety of ways of estimating the ages...Ch. 29 - Since the time of Copernicus, each revolution in...Ch. 29 - The anthropic principle suggests that in some...Ch. 29 - Penzias and Wilson’s discovery of the Cosmic...Ch. 29 - Construct a timeline for the universe and indicate...Ch. 29 - Suppose the Hubble constant were not 22 but 33...Ch. 29 - Assume that the average galaxy contains...Ch. 29 - The CMB contains roughly 400 million photons per...Ch. 29 - Following up on Exercise 29.27 calculate the...Ch. 29 - Continuing the thinking in Exercise 29.27 and...Ch. 29 - Continuing the thinking in the last three...Ch. 29 - There is still some uncertainty in the Hubble...Ch. 29 - It is possible to derive the age of the universe...
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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
- What does the term Hubble time mean in cosmology, and what is the current best calculation for the Hubble time?arrow_forwardDescribe at least two characteristics of the universe that are explained by the standard Big Bang model.arrow_forwardWhat is your reflection about the big bang theory?arrow_forward
- Which of the following were given as evidence supporting the Big Bang Theory? The red shift in star spectra Microwave energy across the universe at approximately 3 degrees Kelvin The abundance of light elements in the universe a I only b II only c I and II only d I, II, and IIIarrow_forwardExplain the expanding Universe theory and its relationship to the Big Bang theory?arrow_forwardAssume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus helium nuclei, ignoring other elements). Take the helium mass fraction as 1/4. How many electrons are there in the observable Universe? Enter your answer in scientific notation with one decimal place. Values: n = 1*10^80arrow_forward
- The Big Bang Theory is currently the most widely-accepted explanation for the origin of the Universe. As technology has emerged, new data has been collected to allow for a clearer understanding of how the Universe is changing and the possible things that might happen to it in the future. Which of the following is not a question that can be answered using scientific processes? >What was the cause of the Big Bang? >What is the type of energy emitted by celestial objects?>What is the rate at which the universe appears to be expanding? >What are the chemical elements that exist in the other parts of the galaxy?arrow_forwardWhich statement best describes the Big Bang Theory? O Galaxies within the universe collided about 13.5 billion years ago forming the present objects in the universe. O Existing objects in the universe move randomly with the potential of colliding in about 13.5 billion years. O Galaxies throughout the universe moved toward each other after an event that occurred about 13.5 billion years ago O Most objects in the universe are moving away from each other as a result of an event that occurred about 13.5 billion years ago. 21 22 23 24 25 26 27 28 Support | Schoology Blog | PRIVACY POLICYarrow_forward
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