Already the moon had risen, a flake of waxy alabaster in a blue sky thin with light.

NEWYORKER: She��s the One

As if to spite me, the sky was blue, and the light was too brilliant.

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But a clear, cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more easily than they do red light.

BBC: rainbow

And the sky is blue, it says, because the sun produces white light which is made up of all the colours of the rainbow.

BBC: rainbow

Meanwhile, the blue gantries, now a symbol of people power, still merrily light up the Gauteng night sky.

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