Question

twinkling of star definition

Answer 1

The scientific name for the twinkling of stars is stellar scintillation (or astronomical scintillation). Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere.

Answer 2

Stars twinkle because of turbulence in the atmosphere of the Earth. As the atmosphere churns, the light from thestar is refracted in different directions. This causes the star's image to change slightly in brightness and position, hence "twinkle."