PHYS 1403 Lab 10: CENTER OF THE GALAXY Worksheet

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PHYS 1403 Lab 10: CENTER OF THE GALAXY Worksheet Enter your answers to each question in the data tables and yellow highlighted areas below. When completed, please save and upload this file to the a... ssignment – Lab 10 – in Canvas. PRELAB QUESTIONS 1. What is meant by a “geocentric” model? The “geocentric” model was known as the belief that the Earth was at the center of the universe. 2. What is meant by a “heliocentric” model? The “heliocentric” model, also known as the Copernican System, was the claim that the Sun, not the Earth, was at the center of the Universe and the Earth, stars and planets all revolved about the Sun. 3. What were the main arguments made (by Aristotle) against the heliocentric model? The main arguments Aristotle made against the heliocentric model was that it was not possible to feel the Earth move, there was wind due to a moving Earth, he birds and the clouds would be left behind if the Earth was moving, and if the Earth was moving the stars would display a parallax effect. 4. What is the difference between the “Galaxy” and the “Universe”? The difference between the “Galaxy” and “Universe” is that a galaxy consists of stars, gas, asteroids, dust, and dark matter. However, the universe is a much more broad concept meaning that the universe consists of everything including the Earth, energy, sky, galaxies, etc. 5. How will we determine the location of the center of our galaxy in today’s lab? In today’s lab, we can determine the location of the center of or galaxy by simply conducting the same procedures as astronomer Harlow Shapley, and plotting the locations of the globular clusters [Show More]

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