10. Why does the star seem to twinkle A. Because stars are diamond scattered in the sky B. Because the stars are moving. C. Because the stars are far away from the Earth. D. Because what we see is the dust moving in the atmosphere
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Hence, answer is C. Stars are far away from earth
Stars twinkle because, they’re so far away from Earth that, even through large telescopes, they appear only as pinpoints. And it’s easy for Earth’s atmosphere to disturb the pinpoint light of a star. As a star’s light pierces our atmosphere, each single stream of starlight is refracted – caused to change direction, slightly – by the various temperature and density layers in Earth’s atmosphere.
You might think of it as the light traveling a zig-zag path to our eyes, instead of the straight path the light would travel if Earth didn’t have an atmosphere.
(To fully understand the topic about stars and planets, a link is provided below)
https://earthsky.org/space/
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