GOT a glowing Amazon Alexa speaker are you’re not sure what’s happening? We reveal all the Amazon Echo colours you might experience, and explain exactly what they mean. Alexa glowing bl… ...

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, ...

The bright green, red and yellow colours are enhanced with ultra violet (UV) and blue-filtered light to see the unique effect. The 39-year-old said: 'It is still not fully understood why certain ...

For example, fast-moving Leonid meteors can often have a green glow. Galaxies that glow green are known as green pea galaxies. ... They can be red, yellow, blue and white, but not green.

The light we see as green, for example, has a wavelength of around 510 nanometers, whereas the wavelengths of blue and yellow shades are shorter and longer, respectively.

GOT a glowing Amazon Alexa speaker are you’re not sure what’s happening? We reveal all the Amazon Echo colours you might experience, and explain exactly what they mean. Alexa glowing bl… ...

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, ...

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, ...