Why Do Stars Twinkle in the Night Sky?

Examples

1. A flashlight shining through a wobbly curtain looks like it’s flickering.
2. A bubble in a glass of water makes the light behind it look distorted and changing.
3. The sun seems to shimmer on a hot road because the air is moving unevenly.

More examples

See also

• What If the Moon Was Made of Cheese?
• What Causes a Solar Eclipse Exactly?
• What's the Difference Between a Comet and an Asteroid?
• What If We Could Live on Mars?
• Why Do We See the Same Side of the Moon?

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