If Earth had no atmosphere like the Moon there would be no scattering, and the sky would remain black, even in daylight ...

As soon as it gets dark, two bright lights become visible—the brightest in the southwest and an almost-as-bright light in the east. What are they?

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.

With each passing night as, the crescent slowly widens and it begins to appear against a progressively darker background, its ...

It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...