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The twinkling of stars is explained in the chapter as being due to

Question
The twinkling of stars is explained in the chapter as being due to
reflection of starlight off the Moon
atmospheric refraction of starlight
the stars physically changing brightness every second
dispersion of starlight into colours only
Answer
atmospheric refraction of starlight
Detailed Explanation
The chapter states that the twinkling of a star is due to atmospheric refraction of starlight.
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