why do stars twinkle?
Answers
Your Solution:
Did you know that stars do not twinkle; they only appear to twinkle when seen from the Earth’s surface. The stars seem to twinkle in the night sky due to the effects of the Earth’s atmosphere. When starlight enters the atmosphere, it is affected by winds in the atmosphere and areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground.
As a star’s light penetrates the Earth’s atmosphere, every individual 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 travelling a zig-zag path to our eyes, instead of the straight path the light would travel if Earth didn’t have an atmosphere.
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