Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 1, Problem 12QAP
To determine
Significance of the scientific revolution.
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Check out a sample textbook solutionStudents have asked these similar questions
By the term universe, astronomers mean:
The system of 200 to 400 billion stars, of which the sun is one.
The collection of several dozen galaxies, of which the Milky Way is one.
Everything that we can observe.
The realm inside the atom.
What were the roles of new thoughts/ideas regarding the universe and new developments in the Scientific Revolution to the development of science and technology? (do not copy the same answer of the tutor anymore)
Compare the values of the number of grains of sand in all earth’s beaches with the number of stars in the universe – which is greater?
Number of sand grains
Number of stars
They are about the same.
Chapter 1 Solutions
Understanding Our Universe
Ch. 1.1 - Prob. 1.1CYUCh. 1.2 - Prob. 1.2CYUCh. 1.3 - Prob. 1.3CYUCh. 1 - Prob. 1QAPCh. 1 - Prob. 2QAPCh. 1 - Prob. 3QAPCh. 1 - Prob. 4QAPCh. 1 - Prob. 5QAPCh. 1 - Prob. 6QAPCh. 1 - Prob. 7QAP
Ch. 1 - Prob. 8QAPCh. 1 - Prob. 9QAPCh. 1 - Prob. 10QAPCh. 1 - Prob. 11QAPCh. 1 - Prob. 12QAPCh. 1 - Prob. 13QAPCh. 1 - Prob. 14QAPCh. 1 - Prob. 15QAPCh. 1 - Prob. 16QAPCh. 1 - Prob. 17QAPCh. 1 - Prob. 18QAPCh. 1 - Prob. 19QAPCh. 1 - Prob. 20QAPCh. 1 - Prob. 21QAPCh. 1 - Prob. 22QAPCh. 1 - Prob. 23QAPCh. 1 - Prob. 24QAPCh. 1 - Prob. 25QAPCh. 1 - Prob. 26QAPCh. 1 - Prob. 27QAPCh. 1 - Prob. 28QAPCh. 1 - Prob. 29QAPCh. 1 - Prob. 30QAPCh. 1 - Prob. 31QAPCh. 1 - Prob. 32QAPCh. 1 - Prob. 34QAPCh. 1 - Prob. 35QAPCh. 1 - Prob. 36QAPCh. 1 - Prob. 37QAPCh. 1 - Prob. 38QAPCh. 1 - Prob. 39QAPCh. 1 - Prob. 40QAPCh. 1 - Prob. 41QAPCh. 1 - Prob. 42QAPCh. 1 - Prob. 43QAPCh. 1 - Prob. 44QAPCh. 1 - Prob. 45QAP
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- Since the time of Copernicus, each revolution in astronomy has moved humans farther from the center of the universe. Now it appears that we may not even be made of the most common form of matter. Trace the changes in scientific thought about the central nature of Earth, the Sun, and our Galaxy on a cosmic scale. Explain how the notion that most of the universe is made of dark matter continues this “Copernican tradition.”arrow_forwardConsider three cosmological perspectives-the geocentric perspective, the heliocentric perspective, and the modern perspective-in which the Sun is a minor star on the outskirts of one galaxy among billions. Discuss some of the cultural and philosophical implications of each point of view.arrow_forwardThe closest star to Earth, after the Sun, is Proxima Centauri, which is just over 4 light years away from us. A light year is the distance traveled in one year by light, which travels at about 300,000 kilometers per second. What is the order of magnitude of the number of kilometers that separate us from Proxima Centauriarrow_forward
- Astronomers frequently say that “there are more stars in the universe than there are grains of sand on all the beaches on the earth”. Given that a typical grain of sand is about 0.5 – 1.0 mm in diameter, estimate the number of grains of sand on all the earth’s beaches. The diameter of the Earth is 12,742 km.arrow_forwardThe Drake Equation is a tool for estimating ... A) the number of alien civilizations that have visited the Earth in the past B) the number of planets in the Milky Way that contain civilizations intelligent enough to communicate through space. C) the number of habitable planets in the Milky Way where life has developedarrow_forwardContra Parmenides and a previously universally accepted idea, at the end of his life, Stephen Hawking made the argument that a. the universe can and will create itself from nothing b. the cosmos is an illusion c. the cosmos does not exist d. Parmenides did not existarrow_forward
- When was universe was createdarrow_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_forwardWhat has occurred after the Big Bang? Objects in the universe have reached a critical density. Objects that were once close together have moved apart as space expanded. Space expanded without affecting the distances between objects. Objects that were once close together have expanded apart into already existing space.arrow_forward
- How many times longer than the length of recorded history is the age of the universe? I was also given that the length of recorded history is 10E11 s, and that the age of the universe is 10E18 s. But, when putting 10E18/10E11 = 10E7, I get the wrong answer.arrow_forwardSome people dismiss the validity of scientific theories by saying that they are “only” theories. The law of universal gravity is a theory. Does this mean that scientists still doubt its validity? Explain.arrow_forwardThe Hubble Space Telescope orbits the Earth every 95 minutes, taking breathtaking images of our universe. Calculate its altitude above the Earth's Surface.arrow_forward
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