Stars appear to twinkle due to atmospheric turbulence. As starlight passes through layers of Earth’s atmosphere, varying air densities cause refraction, leading to fluctuations in brightness and position, creating the twinkling effect known as “stellar scintillation.”
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Stars appear to twinkle primarily because of the Earth’s atmosphere, a phenomenon known as “stellar scintillation.” As starlight travels through the layers of the atmosphere, it encounters varying densities and temperatures of air, causing the light to refract. This refraction results in slight changes in the brightness and position of the stars as seen from the ground. The twinkling effect is more pronounced for stars that are low on the horizon, where their light passes through more atmosphere.
For more CBSE Class 6 Science Curiosity Chapter 12 Beyond Earth Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-12/