So the sky isn’t blue, at least not always. It is a glow-in-the-dark night sky too, colored a mix of green, yellow, and red. Its colors result from scattered sunlight, oxygen, and sodium from ...

Why does the sky appear blue, then? Light from the sun is actually made up of all colours of the rainbow: violet, indigo, blue, green, yellow, orange and red, or VIBGYOR, as they are called together.

As a consequence, the blue and green colors dominate the scattered light, giving rise to the distinct green hue that colors the sky. This scattering is known as Rayleigh scattering. It’s the ...

So the sky isn’t blue, at least not always. It is a glow-in-the-dark night sky too, coloured a mix of green, yellow and red. Its colours result from scattered sunlight, oxygen, and sodium from ...