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Ch 1: Starting Points - What is Cosmology

by: Cristina Interiano

Ch 1: Starting Points - What is Cosmology Physics 10240

Marketplace > University of Notre Dame > Science > Physics 10240 > Ch 1 Starting Points What is Cosmology
Cristina Interiano
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About this Document

Intro to course and chapter 1 notes - what is cosmology?
Elementary Cosmology
Grant Mathews
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This 2 page Class Notes was uploaded by Cristina Interiano on Wednesday August 24, 2016. The Class Notes belongs to Physics 10240 at University of Notre Dame taught by Grant Mathews in Fall 2016. Since its upload, it has received 9 views. For similar materials see Elementary Cosmology in Science at University of Notre Dame.


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Date Created: 08/24/16
08.23.16 CH 1: STARTING POINTS A. WHAT IS COSMOLOGY 1. Cosmology: the study of the origin, evolution, eventual fate, and development of the universe a. Cosmogony: any model concerning the coming into existence of the universe. B. QUESTIONS: 1. What is the universe made of? 2. What does it look like? 3. How did it begin? 4. What is its history? 5. What is its future? 6. How and when will the universe end? 7. What are the rules that govern the evolution of the universe? 8. How were the elements formed? C. HOW WE ANSWER THESE QUESTIONS: SCIENCE 1. How does science work? a. Experiment or observation: 1. Measurement uncertainty – measuring how things are expanding has an error a. Science experiments must quantify their uncertainty (error) – fundamental requirement of science i. Ex. Hubble Constant (rate the universe is expanding now) b. Theory, hypothesis, or model to explain observation 2. Key elements of science: a. Construct a theory b. Use theory to predict an outcome c. Perform an experiment to test the prediction d. Make a model 3. Science never ends D. THE SCALE OF THE UNIVERSE 1. Units of distance and time: m, km 2. Scientific notation a. Ex. Distance to moon: 3.84x10 km b. Ex. Distance to sun: 1.5x10 km = 1 AU 2


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