It was around 1870 when the British physicist John William Strutt, better known as Lord Rayleigh, first found an explanation ...

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 ...

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 ...

The moon will appear a striking reddish color in a few weeks when a magnificent total lunar eclipse becomes visible all ...

In just a few days, a total lunar eclipse will be viewable from the U.S. See where and when you can catch a glimpse.

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 ...

The new Big Sky color drop will have you dreaming of blue skies and sunny days, while the bold FireFly Collection will have you reminiscing about being a kid chasing fireflies during nighttime ...