Which of the Following Fundamental Astronomical Questions Did Curtis and Shapley

question 4

Multiple Choice

Which of the following fundamental astronomical questions did Curtis and Shapley debate in 1920 in their famous confrontation?

• A) Whether the Sun was at the center of the Milky Way Galaxy
• B) Whether the universe was expanding outward in all directions
• C) Whether the "spiral nebulae" were part of the Milky Way Galaxy or more distant,separate entities
• D) Whether the theory of general relativity could be used to explain the behavior of our universe

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Definitions:

Price Charged

The amount of money a buyer has to pay to acquire a product or service from a seller.

Marginal Revenue

The revenue that a company gains by selling an additional unit of a product, indicating the income effect of increasing output by one unit.

Marginal Cost

The additional financial burden of creating another unit of a product or service.

Price Elasticity

The extent to which consumer demand for a good changes in response to a change in the good's price, represented by the ratio of percentage change in demand to percentage change in price.