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Which of the Following Observations First Led Astronomers to Believe

Question 16

Multiple Choice

Which of the following observations first led astronomers to believe that the Sun is located in a disk-shaped collection of stars?


A) Stars appear uniformly scattered over the celestial sphere.
B) The distances to Cepheid variables revealed the position of the Sun within the galaxy.
C) The Milky Way is composed of stars and has a ring shape on the celestial sphere.
D) Globular clusters are preferentially found in the direction of Sagittarius.

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