The stars in our sky twinkle in brightness and color because of
A)turbulence in the Earth's atmosphere.
B)rapid changes in the brightnesses and colors of stars caused by changes in their spectra.
C)light pollution.
D)the bubbling and boiling of gases on the surfaces of stars.

Question

Quizplus · Accepted Answer

The twinkling of stars is caused by turbulence in the Earth's atmosphere, which causes the light to be refracted and scattered in different directions, leading to changes in brightness and color as the light reaches our eyes. This effect is particularly noticeable when stars are low on the horizon, as their light has to pass through more of the atmosphere to reach us.

The Stars in Our Sky Twinkle in Brightness and Color