Why is the star sparkling?

What causes the stars to sparkle? Is light from "sparkling" planets like light from stars?

Sparkling stars are due to chaos in the Earth's atmosphere.

As explained by Dr. Dave Kornreich, Department of Astrophysics at Humboldt State University (USA), sparkling stars are due to chaos in the Earth's atmosphere . When the atmosphere is emerging, light from the star is refracted in different directions . This makes the star's image change slightly in brightness and position, so it "sparkles".

This is one of the reasons the Hubble telescope is so successful: in space, there is no air to make stars twinkle, allowing for much better imaging.

The planets do not sparkle like stars. In fact, this is a good way to detect whether a particular object you see in the sky is a planet or a star.

The reason is that stars are so far away that they are basically points of light in the sky , while planets are actually finite in size. The size of a planet in the sky means "average" chaotic effects of the atmosphere creating a relatively stable image for the eye. Never see a "sparkling" planet as such.