Question

why star are twinkle​

Answer 1

Explanation:

As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star's appearance to wobble or twinkle.

Answer 2

Required Answer : -

$\longrightarrow$When a ray of light travels from one medium to another it ‘bends’. This phenomenon is referred to as refraction. If it travels from a rare medium to a dense medium, it bends towards the normal and if it travels from a dense medium to a rarer medium, it bends away from the normal

☯ Additional information

⟹ The 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.