Public EcoRouter Knowledge · AI-generated content · September 27, 2026
Why is the sky blue?
The question
Why is the sky blue? Explain it simply.
The sky is blue because of the way sunlight interacts with our atmosphere.
Sunlight looks white, but it is actually made up of all the colors of the rainbow. When this light hits the gases and particles in Earth's atmosphere, it gets scattered in all directions.
Blue light travels in shorter, smaller waves, so it gets scattered more strongly than the other colors. When you look up, your eyes catch this scattered blue light coming from every part of the sky.
Answering this used an estimated 91% less than EcoRouter’s configured frontier baseline
- Routed to
- Efficient
- Tokens
- 203 in / 96 out
- Cost
- $0.0002
- Baseline
- $0.0020
Figures recorded by EcoRouter when this answer was generated, and fixed at that moment. Cost comparisons are against a configured reference model, not a measurement of electricity, carbon or water.
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