Why do stars twinkle at clear night?

By MindStick

Due to the bending and shifting of light caused by the earth's continually changing atmosphere, stars twinkle at clear night.

Moreover, earth's atmosphere reflects starlight due to its gas layers and density, which is regulated by temperature and air density.

The atmosphere is constantly changing due to winds, convection currents, and other reasons, resulting in a steady rise in refraction.

Additionally, earth's atmosphere also interferes with light waves from stars, causing them to sparkle or shimmer.

Meanwhile, planets appear larger as they are closer to Earth and have less impact from the atmosphere.

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