Question

what do stars appear twinkling?
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Answer 1

Explanation: Stars twinkle because we view them through our atmosphere, says James Lattis, director of University of Wisconsin–Madison Space Place. “Seen from the moon, where there is no atmosphere, stars do not twinkle at all, but here on Earth starlight passes through many miles of air on its way to our eyes.”

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Answer 2

Explanation:

Stars twinkle because … they're so far away from Earth that, even through large telescopes, they appear only as pinpoints. ... 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.