• Question: How is the sky blue and why is the earth's axis tilted?

    Asked by akwardscilence to Kat, Andrew, Katie, Sadaf on 18 Jun 2013.
    • Photo: Andrew Swale

      Andrew Swale answered on 18 Jun 2013:

      The sky is blue due to Rayleigh scattering. As light passes through our atmosphere, the shorter wavelengths such as blue light are scattered across the sky causing the sky to therefore look blue

      As for the tilted axis I am not sure but I know it involves Earth’s orbit and rotation!

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