If the sky is blue during the day, why does it turn brilliant shades of red and orange at sunrise and sunset? The answer lies in the angle of the Sun and the distance its light travels through the ...

It was around 1870 when the British physicist John William Strutt, better known as Lord Rayleigh, first found an explanation for why the sky is blue: blue light from the sun is scattered the most when ...

As the Sun moves lower in the sky, its light must travel through a greater portion of the atmosphere before reaching you. This increased distance causes even more blue light to scatter ...