Some people probably believe that the twinkling effect is produced by the stars themselves, but that is not the case at all.

The brightest star in the night sky shows off this spring: How to see a scintillating Sirius

Source: space
Source Link: https://www.space.com/stargazing/the-brightest-star-in-the-night-sky-shows-off-this-spring-how-to-see-a-scintillating-sirius